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Finding the Fourth Proportional to 71,195.64, 98,239.44 and 40,569

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Solution

The fourth proportional to 71,195.64, 98,239.44 and 40,569 is: 55,979.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,195.64 : 98,239.44 = 40,569 : x
  2. Step 2: Convert to fraction form
    71,195.64/98,239.44 = 40,569/x
  3. Step 3: Cross multiply
    71,195.64x = 98,239.44 × 40,569
  4. Step 4: Simplify right side
    71,195.64x = 3,985,475,841.36
  5. Step 5: Solve for x
    x = 3,985,475,841.36/71,195.64
  6. Step 6: Final answer
    x = 55,979.21

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1.5x scale

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.