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Finding the Fourth Proportional to 72,374.80, 99,877.23 and 40,544.36

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Solution

The fourth proportional to 72,374.80, 99,877.23 and 40,544.36 is: 55,951.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,374.80 : 99,877.23 = 40,544.36 : x
  2. Step 2: Convert to fraction form
    72,374.80/99,877.23 = 40,544.36/x
  3. Step 3: Cross multiply
    72,374.80x = 99,877.23 × 40,544.36
  4. Step 4: Simplify right side
    72,374.80x = 4,049,458,166.20
  5. Step 5: Solve for x
    x = 4,049,458,166.20/72,374.80
  6. Step 6: Final answer
    x = 55,951.22

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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.