Home / 66,011.28-91,066.05-39,154.92

Finding the Fourth Proportional to 66,011.28, 91,066.05 and 39,154.92

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Solution

The fourth proportional to 66,011.28, 91,066.05 and 39,154.92 is: 54,016.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,011.28 : 91,066.05 = 39,154.92 : x
  2. Step 2: Convert to fraction form
    66,011.28/91,066.05 = 39,154.92/x
  3. Step 3: Cross multiply
    66,011.28x = 91,066.05 × 39,154.92
  4. Step 4: Simplify right side
    66,011.28x = 3,565,683,902.47
  5. Step 5: Solve for x
    x = 3,565,683,902.47/66,011.28
  6. Step 6: Final answer
    x = 54,016.28

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Double scale
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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.