Home / 83,961.50-115,829.38-56,728.80

Finding the Fourth Proportional to 83,961.50, 115,829.38 and 56,728.80

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Solution

The fourth proportional to 83,961.50, 115,829.38 and 56,728.80 is: 78,260.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,961.50 : 115,829.38 = 56,728.80 : x
  2. Step 2: Convert to fraction form
    83,961.50/115,829.38 = 56,728.80/x
  3. Step 3: Cross multiply
    83,961.50x = 115,829.38 × 56,728.80
  4. Step 4: Simplify right side
    83,961.50x = 6,570,861,732.14
  5. Step 5: Solve for x
    x = 6,570,861,732.14/83,961.50
  6. Step 6: Final answer
    x = 78,260.41

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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.