Home / 91,531.76-126,306.88-55,717.78

Finding the Fourth Proportional to 91,531.76, 126,306.88 and 55,717.78

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Solution

The fourth proportional to 91,531.76, 126,306.88 and 55,717.78 is: 76,886.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,531.76 : 126,306.88 = 55,717.78 : x
  2. Step 2: Convert to fraction form
    91,531.76/126,306.88 = 55,717.78/x
  3. Step 3: Cross multiply
    91,531.76x = 126,306.88 × 55,717.78
  4. Step 4: Simplify right side
    91,531.76x = 7,037,538,952.33
  5. Step 5: Solve for x
    x = 7,037,538,952.33/91,531.76
  6. Step 6: Final answer
    x = 76,886.31

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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.