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Finding the Fourth Proportional to 101,487.78, 152,250.80 and 31,350.68

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Solution

The fourth proportional to 101,487.78, 152,250.80 and 31,350.68 is: 47,031.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,487.78 : 152,250.80 = 31,350.68 : x
  2. Step 2: Convert to fraction form
    101,487.78/152,250.80 = 31,350.68/x
  3. Step 3: Cross multiply
    101,487.78x = 152,250.80 × 31,350.68
  4. Step 4: Simplify right side
    101,487.78x = 4,773,166,110.54
  5. Step 5: Solve for x
    x = 4,773,166,110.54/101,487.78
  6. Step 6: Final answer
    x = 47,031.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.