Home / 78,433.68-108,238.14-42,623.04

Finding the Fourth Proportional to 78,433.68, 108,238.14 and 42,623.04

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Solution

The fourth proportional to 78,433.68, 108,238.14 and 42,623.04 is: 58,819.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,433.68 : 108,238.14 = 42,623.04 : x
  2. Step 2: Convert to fraction form
    78,433.68/108,238.14 = 42,623.04/x
  3. Step 3: Cross multiply
    78,433.68x = 108,238.14 × 42,623.04
  4. Step 4: Simplify right side
    78,433.68x = 4,613,438,570.75
  5. Step 5: Solve for x
    x = 4,613,438,570.75/78,433.68
  6. Step 6: Final answer
    x = 58,819.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.