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Finding the Fourth Proportional to 71,324.99, 98,427.28 and 39,493.20

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Solution

The fourth proportional to 71,324.99, 98,427.28 and 39,493.20 is: 54,499.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,324.99 : 98,427.28 = 39,493.20 : x
  2. Step 2: Convert to fraction form
    71,324.99/98,427.28 = 39,493.20/x
  3. Step 3: Cross multiply
    71,324.99x = 98,427.28 × 39,493.20
  4. Step 4: Simplify right side
    71,324.99x = 3,887,208,155.76
  5. Step 5: Solve for x
    x = 3,887,208,155.76/71,324.99
  6. Step 6: Final answer
    x = 54,499.95

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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.