Home / 87,978.96-121,248.18-62,486.46

Finding the Fourth Proportional to 87,978.96, 121,248.18 and 62,486.46

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Solution

The fourth proportional to 87,978.96, 121,248.18 and 62,486.46 is: 86,115.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,978.96 : 121,248.18 = 62,486.46 : x
  2. Step 2: Convert to fraction form
    87,978.96/121,248.18 = 62,486.46/x
  3. Step 3: Cross multiply
    87,978.96x = 121,248.18 × 62,486.46
  4. Step 4: Simplify right side
    87,978.96x = 7,576,369,549.64
  5. Step 5: Solve for x
    x = 7,576,369,549.64/87,978.96
  6. Step 6: Final answer
    x = 86,115.70

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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.