Home / 78,370.20-108,149.90-42,560.46

Finding the Fourth Proportional to 78,370.20, 108,149.90 and 42,560.46

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Solution

The fourth proportional to 78,370.20, 108,149.90 and 42,560.46 is: 58,732.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,370.20 : 108,149.90 = 42,560.46 : x
  2. Step 2: Convert to fraction form
    78,370.20/108,149.90 = 42,560.46/x
  3. Step 3: Cross multiply
    78,370.20x = 108,149.90 × 42,560.46
  4. Step 4: Simplify right side
    78,370.20x = 4,602,909,280.15
  5. Step 5: Solve for x
    x = 4,602,909,280.15/78,370.20
  6. Step 6: Final answer
    x = 58,732.91

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1.5x scale

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.