Home / 78,733.20-108,651.87-42,923.28

Finding the Fourth Proportional to 78,733.20, 108,651.87 and 42,923.28

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Solution

The fourth proportional to 78,733.20, 108,651.87 and 42,923.28 is: 59,234.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,733.20 : 108,651.87 = 42,923.28 : x
  2. Step 2: Convert to fraction form
    78,733.20/108,651.87 = 42,923.28/x
  3. Step 3: Cross multiply
    78,733.20x = 108,651.87 × 42,923.28
  4. Step 4: Simplify right side
    78,733.20x = 4,663,694,638.53
  5. Step 5: Solve for x
    x = 4,663,694,638.53/78,733.20
  6. Step 6: Final answer
    x = 59,234.16

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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.