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Finding the Fourth Proportional to 71,155.87, 98,192.43 and 40,945.86

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Solution

The fourth proportional to 71,155.87, 98,192.43 and 40,945.86 is: 56,503.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,155.87 : 98,192.43 = 40,945.86 : x
  2. Step 2: Convert to fraction form
    71,155.87/98,192.43 = 40,945.86/x
  3. Step 3: Cross multiply
    71,155.87x = 98,192.43 × 40,945.86
  4. Step 4: Simplify right side
    71,155.87x = 4,020,573,491.84
  5. Step 5: Solve for x
    x = 4,020,573,491.84/71,155.87
  6. Step 6: Final answer
    x = 56,503.75

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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.