Home / 72,581.11-108,829.29-28,155.95

Finding the Fourth Proportional to 72,581.11, 108,829.29 and 28,155.95

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Solution

The fourth proportional to 72,581.11, 108,829.29 and 28,155.95 is: 42,217.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,581.11 : 108,829.29 = 28,155.95 : x
  2. Step 2: Convert to fraction form
    72,581.11/108,829.29 = 28,155.95/x
  3. Step 3: Cross multiply
    72,581.11x = 108,829.29 × 28,155.95
  4. Step 4: Simplify right side
    72,581.11x = 3,064,192,047.78
  5. Step 5: Solve for x
    x = 3,064,192,047.78/72,581.11
  6. Step 6: Final answer
    x = 42,217.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.