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Finding the Fourth Proportional to 71,018.91, 98,006.56 and 38,755.80

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Solution

The fourth proportional to 71,018.91, 98,006.56 and 38,755.80 is: 53,483.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,018.91 : 98,006.56 = 38,755.80 : x
  2. Step 2: Convert to fraction form
    71,018.91/98,006.56 = 38,755.80/x
  3. Step 3: Cross multiply
    71,018.91x = 98,006.56 × 38,755.80
  4. Step 4: Simplify right side
    71,018.91x = 3,798,322,541.16
  5. Step 5: Solve for x
    x = 3,798,322,541.16/71,018.91
  6. Step 6: Final answer
    x = 53,483.26

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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.