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Finding the Fourth Proportional to 64,871.20, 97,306.80 and 62,279.20

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Solution

The fourth proportional to 64,871.20, 97,306.80 and 62,279.20 is: 93,418.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,871.20 : 97,306.80 = 62,279.20 : x
  2. Step 2: Convert to fraction form
    64,871.20/97,306.80 = 62,279.20/x
  3. Step 3: Cross multiply
    64,871.20x = 97,306.80 × 62,279.20
  4. Step 4: Simplify right side
    64,871.20x = 6,060,189,658.56
  5. Step 5: Solve for x
    x = 6,060,189,658.56/64,871.20
  6. Step 6: Final answer
    x = 93,418.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.