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Finding the Fourth Proportional to 63,129.89, 87,124.59 and 36,281.63

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Solution

The fourth proportional to 63,129.89, 87,124.59 and 36,281.63 is: 50,071.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,129.89 : 87,124.59 = 36,281.63 : x
  2. Step 2: Convert to fraction form
    63,129.89/87,124.59 = 36,281.63/x
  3. Step 3: Cross multiply
    63,129.89x = 87,124.59 × 36,281.63
  4. Step 4: Simplify right side
    63,129.89x = 3,161,021,702.66
  5. Step 5: Solve for x
    x = 3,161,021,702.66/63,129.89
  6. Step 6: Final answer
    x = 50,071.72

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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.