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Finding the Fourth Proportional to 40,707.62, 61,070.20 and 12,627.11

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Solution

The fourth proportional to 40,707.62, 61,070.20 and 12,627.11 is: 18,943.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,707.62 : 61,070.20 = 12,627.11 : x
  2. Step 2: Convert to fraction form
    40,707.62/61,070.20 = 12,627.11/x
  3. Step 3: Cross multiply
    40,707.62x = 61,070.20 × 12,627.11
  4. Step 4: Simplify right side
    40,707.62x = 771,140,133.12
  5. Step 5: Solve for x
    x = 771,140,133.12/40,707.62
  6. Step 6: Final answer
    x = 18,943.39

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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.