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Finding the Fourth Proportional to 72,859.78, 100,543.57 and 41,030.02

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Solution

The fourth proportional to 72,859.78, 100,543.57 and 41,030.02 is: 56,619.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,859.78 : 100,543.57 = 41,030.02 : x
  2. Step 2: Convert to fraction form
    72,859.78/100,543.57 = 41,030.02/x
  3. Step 3: Cross multiply
    72,859.78x = 100,543.57 × 41,030.02
  4. Step 4: Simplify right side
    72,859.78x = 4,125,304,687.97
  5. Step 5: Solve for x
    x = 4,125,304,687.97/72,859.78
  6. Step 6: Final answer
    x = 56,619.78

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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.