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Finding the Fourth Proportional to 71,395, 98,389.26 and 52,280.62

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Solution

The fourth proportional to 71,395, 98,389.26 and 52,280.62 is: 72,047.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,395 : 98,389.26 = 52,280.62 : x
  2. Step 2: Convert to fraction form
    71,395/98,389.26 = 52,280.62/x
  3. Step 3: Cross multiply
    71,395x = 98,389.26 × 52,280.62
  4. Step 4: Simplify right side
    71,395x = 5,143,851,514.14
  5. Step 5: Solve for x
    x = 5,143,851,514.14/71,395
  6. Step 6: Final answer
    x = 72,047.78

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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.