Home / 90,874.64-136,317.40-28,545.14

Finding the Fourth Proportional to 90,874.64, 136,317.40 and 28,545.14

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Solution

The fourth proportional to 90,874.64, 136,317.40 and 28,545.14 is: 42,819.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,874.64 : 136,317.40 = 28,545.14 : x
  2. Step 2: Convert to fraction form
    90,874.64/136,317.40 = 28,545.14/x
  3. Step 3: Cross multiply
    90,874.64x = 136,317.40 × 28,545.14
  4. Step 4: Simplify right side
    90,874.64x = 3,891,199,267.44
  5. Step 5: Solve for x
    x = 3,891,199,267.44/90,874.64
  6. Step 6: Final answer
    x = 42,819.42

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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.