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Finding the Fourth Proportional to 99,295.60, 137,059.80 and 63,581.80

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Solution

The fourth proportional to 99,295.60, 137,059.80 and 63,581.80 is: 87,763.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,295.60 : 137,059.80 = 63,581.80 : x
  2. Step 2: Convert to fraction form
    99,295.60/137,059.80 = 63,581.80/x
  3. Step 3: Cross multiply
    99,295.60x = 137,059.80 × 63,581.80
  4. Step 4: Simplify right side
    99,295.60x = 8,714,508,791.64
  5. Step 5: Solve for x
    x = 8,714,508,791.64/99,295.60
  6. Step 6: Final answer
    x = 87,763.29

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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.