Home / 40,129.32-55,376.61-22,222.92

Finding the Fourth Proportional to 40,129.32, 55,376.61 and 22,222.92

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Solution

The fourth proportional to 40,129.32, 55,376.61 and 22,222.92 is: 30,666.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,129.32 : 55,376.61 = 22,222.92 : x
  2. Step 2: Convert to fraction form
    40,129.32/55,376.61 = 22,222.92/x
  3. Step 3: Cross multiply
    40,129.32x = 55,376.61 × 22,222.92
  4. Step 4: Simplify right side
    40,129.32x = 1,230,629,973.90
  5. Step 5: Solve for x
    x = 1,230,629,973.90/40,129.32
  6. Step 6: Final answer
    x = 30,666.60

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Half scale
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Double scale
Find fourth proportional to 40,130.32, 55,377.99 and 22,223.92
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.