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Finding the Fourth Proportional to 101,876.88, 152,823.75 and 31,756.20

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Solution

The fourth proportional to 101,876.88, 152,823.75 and 31,756.20 is: 47,636.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,876.88 : 152,823.75 = 31,756.20 : x
  2. Step 2: Convert to fraction form
    101,876.88/152,823.75 = 31,756.20/x
  3. Step 3: Cross multiply
    101,876.88x = 152,823.75 × 31,756.20
  4. Step 4: Simplify right side
    101,876.88x = 4,853,101,569.75
  5. Step 5: Solve for x
    x = 4,853,101,569.75/101,876.88
  6. Step 6: Final answer
    x = 47,636.93

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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.