Home / 91,140.50-125,753.74-52,877.88

Finding the Fourth Proportional to 91,140.50, 125,753.74 and 52,877.88

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Solution

The fourth proportional to 91,140.50, 125,753.74 and 52,877.88 is: 72,959.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,140.50 : 125,753.74 = 52,877.88 : x
  2. Step 2: Convert to fraction form
    91,140.50/125,753.74 = 52,877.88/x
  3. Step 3: Cross multiply
    91,140.50x = 125,753.74 × 52,877.88
  4. Step 4: Simplify right side
    91,140.50x = 6,649,591,041.08
  5. Step 5: Solve for x
    x = 6,649,591,041.08/91,140.50
  6. Step 6: Final answer
    x = 72,959.78

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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.