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Finding the Fourth Proportional to 63,691.13, 87,983.69 and 51,028.40

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Solution

The fourth proportional to 63,691.13, 87,983.69 and 51,028.40 is: 70,491.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,691.13 : 87,983.69 = 51,028.40 : x
  2. Step 2: Convert to fraction form
    63,691.13/87,983.69 = 51,028.40/x
  3. Step 3: Cross multiply
    63,691.13x = 87,983.69 × 51,028.40
  4. Step 4: Simplify right side
    63,691.13x = 4,489,666,231.74
  5. Step 5: Solve for x
    x = 4,489,666,231.74/63,691.13
  6. Step 6: Final answer
    x = 70,491.24

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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.