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Finding the Fourth Proportional to 41,154.90, 61,731.88 and 9,990.14

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Solution

The fourth proportional to 41,154.90, 61,731.88 and 9,990.14 is: 14,985.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,154.90 : 61,731.88 = 9,990.14 : x
  2. Step 2: Convert to fraction form
    41,154.90/61,731.88 = 9,990.14/x
  3. Step 3: Cross multiply
    41,154.90x = 61,731.88 × 9,990.14
  4. Step 4: Simplify right side
    41,154.90x = 616,710,123.66
  5. Step 5: Solve for x
    x = 616,710,123.66/41,154.90
  6. Step 6: Final answer
    x = 14,985.10

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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.