Home / 80,938.52-121,333.82-28,319.30

Finding the Fourth Proportional to 80,938.52, 121,333.82 and 28,319.30

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Solution

The fourth proportional to 80,938.52, 121,333.82 and 28,319.30 is: 42,453.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,938.52 : 121,333.82 = 28,319.30 : x
  2. Step 2: Convert to fraction form
    80,938.52/121,333.82 = 28,319.30/x
  3. Step 3: Cross multiply
    80,938.52x = 121,333.82 × 28,319.30
  4. Step 4: Simplify right side
    80,938.52x = 3,436,088,100.46
  5. Step 5: Solve for x
    x = 3,436,088,100.46/80,938.52
  6. Step 6: Final answer
    x = 42,453.07

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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.