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Finding the Fourth Proportional to 72,557.76, 100,130.82 and 43,873.32

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Solution

The fourth proportional to 72,557.76, 100,130.82 and 43,873.32 is: 60,545.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,557.76 : 100,130.82 = 43,873.32 : x
  2. Step 2: Convert to fraction form
    72,557.76/100,130.82 = 43,873.32/x
  3. Step 3: Cross multiply
    72,557.76x = 100,130.82 × 43,873.32
  4. Step 4: Simplify right side
    72,557.76x = 4,393,071,507.72
  5. Step 5: Solve for x
    x = 4,393,071,507.72/72,557.76
  6. Step 6: Final answer
    x = 60,545.85

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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.