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Finding the Fourth Proportional to 61,074.76, 84,324.28 and 38,139.52

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Solution

The fourth proportional to 61,074.76, 84,324.28 and 38,139.52 is: 52,658.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,074.76 : 84,324.28 = 38,139.52 : x
  2. Step 2: Convert to fraction form
    61,074.76/84,324.28 = 38,139.52/x
  3. Step 3: Cross multiply
    61,074.76x = 84,324.28 × 38,139.52
  4. Step 4: Simplify right side
    61,074.76x = 3,216,087,563.55
  5. Step 5: Solve for x
    x = 3,216,087,563.55/61,074.76
  6. Step 6: Final answer
    x = 52,658.21

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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.