Home / 40,019.18-55,160.61-28,381.28

Finding the Fourth Proportional to 40,019.18, 55,160.61 and 28,381.28

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Solution

The fourth proportional to 40,019.18, 55,160.61 and 28,381.28 is: 39,119.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,019.18 : 55,160.61 = 28,381.28 : x
  2. Step 2: Convert to fraction form
    40,019.18/55,160.61 = 28,381.28/x
  3. Step 3: Cross multiply
    40,019.18x = 55,160.61 × 28,381.28
  4. Step 4: Simplify right side
    40,019.18x = 1,565,528,717.38
  5. Step 5: Solve for x
    x = 1,565,528,717.38/40,019.18
  6. Step 6: Final answer
    x = 39,119.46

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Half scale
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Double scale
Find fourth proportional to 40,020.18, 55,161.99 and 28,382.28
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.