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Finding the Fourth Proportional to 71,156.40, 98,203.44 and 40,943.04

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Solution

The fourth proportional to 71,156.40, 98,203.44 and 40,943.04 is: 56,505.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,156.40 : 98,203.44 = 40,943.04 : x
  2. Step 2: Convert to fraction form
    71,156.40/98,203.44 = 40,943.04/x
  3. Step 3: Cross multiply
    71,156.40x = 98,203.44 × 40,943.04
  4. Step 4: Simplify right side
    71,156.40x = 4,020,747,372.06
  5. Step 5: Solve for x
    x = 4,020,747,372.06/71,156.40
  6. Step 6: Final answer
    x = 56,505.77

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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.