Home / 91,331.60-125,964.36-57,309.20

Finding the Fourth Proportional to 91,331.60, 125,964.36 and 57,309.20

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Solution

The fourth proportional to 91,331.60, 125,964.36 and 57,309.20 is: 79,040.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,331.60 : 125,964.36 = 57,309.20 : x
  2. Step 2: Convert to fraction form
    91,331.60/125,964.36 = 57,309.20/x
  3. Step 3: Cross multiply
    91,331.60x = 125,964.36 × 57,309.20
  4. Step 4: Simplify right side
    91,331.60x = 7,218,916,700.11
  5. Step 5: Solve for x
    x = 7,218,916,700.11/91,331.60
  6. Step 6: Final answer
    x = 79,040.73

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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.