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Finding the Fourth Proportional to 99,294.60, 137,058.42 and 63,580.80

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Solution

The fourth proportional to 99,294.60, 137,058.42 and 63,580.80 is: 87,761.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,294.60 : 137,058.42 = 63,580.80 : x
  2. Step 2: Convert to fraction form
    99,294.60/137,058.42 = 63,580.80/x
  3. Step 3: Cross multiply
    99,294.60x = 137,058.42 × 63,580.80
  4. Step 4: Simplify right side
    99,294.60x = 8,714,283,990.34
  5. Step 5: Solve for x
    x = 8,714,283,990.34/99,294.60
  6. Step 6: Final answer
    x = 87,761.91

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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.