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Finding the Fourth Proportional to 71,743.06, 99,032.07 and 61,630.90

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Solution

The fourth proportional to 71,743.06, 99,032.07 and 61,630.90 is: 85,073.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,743.06 : 99,032.07 = 61,630.90 : x
  2. Step 2: Convert to fraction form
    71,743.06/99,032.07 = 61,630.90/x
  3. Step 3: Cross multiply
    71,743.06x = 99,032.07 × 61,630.90
  4. Step 4: Simplify right side
    71,743.06x = 6,103,435,602.96
  5. Step 5: Solve for x
    x = 6,103,435,602.96/71,743.06
  6. Step 6: Final answer
    x = 85,073.53

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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.