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Finding the Fourth Proportional to 40,656.78, 60,992 and 14,001.70

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Solution

The fourth proportional to 40,656.78, 60,992 and 14,001.70 is: 21,004.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,656.78 : 60,992 = 14,001.70 : x
  2. Step 2: Convert to fraction form
    40,656.78/60,992 = 14,001.70/x
  3. Step 3: Cross multiply
    40,656.78x = 60,992 × 14,001.70
  4. Step 4: Simplify right side
    40,656.78x = 853,991,686.40
  5. Step 5: Solve for x
    x = 853,991,686.40/40,656.78
  6. Step 6: Final answer
    x = 21,004.90

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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.