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Finding the Fourth Proportional to 72,883.88, 100,545.39 and 42,650.66

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Solution

The fourth proportional to 72,883.88, 100,545.39 and 42,650.66 is: 58,837.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,883.88 : 100,545.39 = 42,650.66 : x
  2. Step 2: Convert to fraction form
    72,883.88/100,545.39 = 42,650.66/x
  3. Step 3: Cross multiply
    72,883.88x = 100,545.39 × 42,650.66
  4. Step 4: Simplify right side
    72,883.88x = 4,288,327,243.46
  5. Step 5: Solve for x
    x = 4,288,327,243.46/72,883.88
  6. Step 6: Final answer
    x = 58,837.80

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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.