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Finding the Fourth Proportional to 71,463.66, 98,620.50 and 39,631.87

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Solution

The fourth proportional to 71,463.66, 98,620.50 and 39,631.87 is: 54,692.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,463.66 : 98,620.50 = 39,631.87 : x
  2. Step 2: Convert to fraction form
    71,463.66/98,620.50 = 39,631.87/x
  3. Step 3: Cross multiply
    71,463.66x = 98,620.50 × 39,631.87
  4. Step 4: Simplify right side
    71,463.66x = 3,908,514,835.34
  5. Step 5: Solve for x
    x = 3,908,514,835.34/71,463.66
  6. Step 6: Final answer
    x = 54,692.34

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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.