Home / 80,044.11-120,068.33-20,878.47

Finding the Fourth Proportional to 80,044.11, 120,068.33 and 20,878.47

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Solution

The fourth proportional to 80,044.11, 120,068.33 and 20,878.47 is: 31,318.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,044.11 : 120,068.33 = 20,878.47 : x
  2. Step 2: Convert to fraction form
    80,044.11/120,068.33 = 20,878.47/x
  3. Step 3: Cross multiply
    80,044.11x = 120,068.33 × 20,878.47
  4. Step 4: Simplify right side
    80,044.11x = 2,506,842,921.46
  5. Step 5: Solve for x
    x = 2,506,842,921.46/80,044.11
  6. Step 6: Final answer
    x = 31,318.27

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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.