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Finding the Fourth Proportional to 40,296.96, 60,410.88 and 13,985.28

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Solution

The fourth proportional to 40,296.96, 60,410.88 and 13,985.28 is: 20,965.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,296.96 : 60,410.88 = 13,985.28 : x
  2. Step 2: Convert to fraction form
    40,296.96/60,410.88 = 13,985.28/x
  3. Step 3: Cross multiply
    40,296.96x = 60,410.88 × 13,985.28
  4. Step 4: Simplify right side
    40,296.96x = 844,863,071.85
  5. Step 5: Solve for x
    x = 844,863,071.85/40,296.96
  6. Step 6: Final answer
    x = 20,965.93

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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.