Home / 91,715.50-126,421.10-72,302.76

Finding the Fourth Proportional to 91,715.50, 126,421.10 and 72,302.76

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Solution

The fourth proportional to 91,715.50, 126,421.10 and 72,302.76 is: 99,662.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,715.50 : 126,421.10 = 72,302.76 : x
  2. Step 2: Convert to fraction form
    91,715.50/126,421.10 = 72,302.76/x
  3. Step 3: Cross multiply
    91,715.50x = 126,421.10 × 72,302.76
  4. Step 4: Simplify right side
    91,715.50x = 9,140,594,452.24
  5. Step 5: Solve for x
    x = 9,140,594,452.24/91,715.50
  6. Step 6: Final answer
    x = 99,662.48

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Double scale
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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.