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Finding the Fourth Proportional to 72,603.80, 108,759.90 and 41,402.60

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Solution

The fourth proportional to 72,603.80, 108,759.90 and 41,402.60 is: 62,020.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,603.80 : 108,759.90 = 41,402.60 : x
  2. Step 2: Convert to fraction form
    72,603.80/108,759.90 = 41,402.60/x
  3. Step 3: Cross multiply
    72,603.80x = 108,759.90 × 41,402.60
  4. Step 4: Simplify right side
    72,603.80x = 4,502,942,635.74
  5. Step 5: Solve for x
    x = 4,502,942,635.74/72,603.80
  6. Step 6: Final answer
    x = 62,020.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.