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Finding the Fourth Proportional to 104,572.80, 156,924 and 42,243.84

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Solution

The fourth proportional to 104,572.80, 156,924 and 42,243.84 is: 63,391.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,572.80 : 156,924 = 42,243.84 : x
  2. Step 2: Convert to fraction form
    104,572.80/156,924 = 42,243.84/x
  3. Step 3: Cross multiply
    104,572.80x = 156,924 × 42,243.84
  4. Step 4: Simplify right side
    104,572.80x = 6,629,072,348.16
  5. Step 5: Solve for x
    x = 6,629,072,348.16/104,572.80
  6. Step 6: Final answer
    x = 63,391.94

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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.