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Finding the Fourth Proportional to 103,070.60, 154,542.72 and 43,872.56

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Solution

The fourth proportional to 103,070.60, 154,542.72 and 43,872.56 is: 65,781.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,070.60 : 154,542.72 = 43,872.56 : x
  2. Step 2: Convert to fraction form
    103,070.60/154,542.72 = 43,872.56/x
  3. Step 3: Cross multiply
    103,070.60x = 154,542.72 × 43,872.56
  4. Step 4: Simplify right side
    103,070.60x = 6,780,184,755.76
  5. Step 5: Solve for x
    x = 6,780,184,755.76/103,070.60
  6. Step 6: Final answer
    x = 65,781.95

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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.