Home / 102,387.76-141,306.58-57,069.88

Finding the Fourth Proportional to 102,387.76, 141,306.58 and 57,069.88

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Solution

The fourth proportional to 102,387.76, 141,306.58 and 57,069.88 is: 78,762.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,387.76 : 141,306.58 = 57,069.88 : x
  2. Step 2: Convert to fraction form
    102,387.76/141,306.58 = 57,069.88/x
  3. Step 3: Cross multiply
    102,387.76x = 141,306.58 × 57,069.88
  4. Step 4: Simplify right side
    102,387.76x = 8,064,349,563.81
  5. Step 5: Solve for x
    x = 8,064,349,563.81/102,387.76
  6. Step 6: Final answer
    x = 78,762.83

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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.