Home / 85,691.18-118,190.10-55,453.17

Finding the Fourth Proportional to 85,691.18, 118,190.10 and 55,453.17

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Solution

The fourth proportional to 85,691.18, 118,190.10 and 55,453.17 is: 76,484.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,691.18 : 118,190.10 = 55,453.17 : x
  2. Step 2: Convert to fraction form
    85,691.18/118,190.10 = 55,453.17/x
  3. Step 3: Cross multiply
    85,691.18x = 118,190.10 × 55,453.17
  4. Step 4: Simplify right side
    85,691.18x = 6,554,016,358.78
  5. Step 5: Solve for x
    x = 6,554,016,358.78/85,691.18
  6. Step 6: Final answer
    x = 76,484.14

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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.