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Finding the Fourth Proportional to 72,374.02, 99,876 and 40,110.70

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Solution

The fourth proportional to 72,374.02, 99,876 and 40,110.70 is: 55,352.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,374.02 : 99,876 = 40,110.70 : x
  2. Step 2: Convert to fraction form
    72,374.02/99,876 = 40,110.70/x
  3. Step 3: Cross multiply
    72,374.02x = 99,876 × 40,110.70
  4. Step 4: Simplify right side
    72,374.02x = 4,006,096,273.20
  5. Step 5: Solve for x
    x = 4,006,096,273.20/72,374.02
  6. Step 6: Final answer
    x = 55,352.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.