Home / 66,819.12-92,134.68-42,587.66

Finding the Fourth Proportional to 66,819.12, 92,134.68 and 42,587.66

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Solution

The fourth proportional to 66,819.12, 92,134.68 and 42,587.66 is: 58,722.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,819.12 : 92,134.68 = 42,587.66 : x
  2. Step 2: Convert to fraction form
    66,819.12/92,134.68 = 42,587.66/x
  3. Step 3: Cross multiply
    66,819.12x = 92,134.68 × 42,587.66
  4. Step 4: Simplify right side
    66,819.12x = 3,923,799,965.38
  5. Step 5: Solve for x
    x = 3,923,799,965.38/66,819.12
  6. Step 6: Final answer
    x = 58,722.71

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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.