Home / 80,909.04-121,354.92-28,319.52

Finding the Fourth Proportional to 80,909.04, 121,354.92 and 28,319.52

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Solution

The fourth proportional to 80,909.04, 121,354.92 and 28,319.52 is: 42,476.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,909.04 : 121,354.92 = 28,319.52 : x
  2. Step 2: Convert to fraction form
    80,909.04/121,354.92 = 28,319.52/x
  3. Step 3: Cross multiply
    80,909.04x = 121,354.92 × 28,319.52
  4. Step 4: Simplify right side
    80,909.04x = 3,436,713,084.04
  5. Step 5: Solve for x
    x = 3,436,713,084.04/80,909.04
  6. Step 6: Final answer
    x = 42,476.26

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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.