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Finding the Fourth Proportional to 41,139.55, 61,709.34 and 9,974.80

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Solution

The fourth proportional to 41,139.55, 61,709.34 and 9,974.80 is: 14,962.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,139.55 : 61,709.34 = 9,974.80 : x
  2. Step 2: Convert to fraction form
    41,139.55/61,709.34 = 9,974.80/x
  3. Step 3: Cross multiply
    41,139.55x = 61,709.34 × 9,974.80
  4. Step 4: Simplify right side
    41,139.55x = 615,537,966.21
  5. Step 5: Solve for x
    x = 615,537,966.21/41,139.55
  6. Step 6: Final answer
    x = 14,962.20

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1.5x scale

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.