Home / 78,627.18-108,502.98-42,816.90

Finding the Fourth Proportional to 78,627.18, 108,502.98 and 42,816.90

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Solution

The fourth proportional to 78,627.18, 108,502.98 and 42,816.90 is: 59,085.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,627.18 : 108,502.98 = 42,816.90 : x
  2. Step 2: Convert to fraction form
    78,627.18/108,502.98 = 42,816.90/x
  3. Step 3: Cross multiply
    78,627.18x = 108,502.98 × 42,816.90
  4. Step 4: Simplify right side
    78,627.18x = 4,645,761,244.36
  5. Step 5: Solve for x
    x = 4,645,761,244.36/78,627.18
  6. Step 6: Final answer
    x = 59,085.95

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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.