Home / 91,712.48-126,560.59-55,889.42

Finding the Fourth Proportional to 91,712.48, 126,560.59 and 55,889.42

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Solution

The fourth proportional to 91,712.48, 126,560.59 and 55,889.42 is: 77,125.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,712.48 : 126,560.59 = 55,889.42 : x
  2. Step 2: Convert to fraction form
    91,712.48/126,560.59 = 55,889.42/x
  3. Step 3: Cross multiply
    91,712.48x = 126,560.59 × 55,889.42
  4. Step 4: Simplify right side
    91,712.48x = 7,073,397,057.71
  5. Step 5: Solve for x
    x = 7,073,397,057.71/91,712.48
  6. Step 6: Final answer
    x = 77,125.79

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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.