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Finding the Fourth Proportional to 63,765.68, 87,999.48 and 53,137.52

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Solution

The fourth proportional to 63,765.68, 87,999.48 and 53,137.52 is: 73,332.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,765.68 : 87,999.48 = 53,137.52 : x
  2. Step 2: Convert to fraction form
    63,765.68/87,999.48 = 53,137.52/x
  3. Step 3: Cross multiply
    63,765.68x = 87,999.48 × 53,137.52
  4. Step 4: Simplify right side
    63,765.68x = 4,676,074,128.49
  5. Step 5: Solve for x
    x = 4,676,074,128.49/63,765.68
  6. Step 6: Final answer
    x = 73,332.15

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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.