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Finding the Fourth Proportional to 71,927.01, 99,356.13 and 65,220.21

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Solution

The fourth proportional to 71,927.01, 99,356.13 and 65,220.21 is: 90,091.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,927.01 : 99,356.13 = 65,220.21 : x
  2. Step 2: Convert to fraction form
    71,927.01/99,356.13 = 65,220.21/x
  3. Step 3: Cross multiply
    71,927.01x = 99,356.13 × 65,220.21
  4. Step 4: Simplify right side
    71,927.01x = 6,480,027,663.39
  5. Step 5: Solve for x
    x = 6,480,027,663.39/71,927.01
  6. Step 6: Final answer
    x = 90,091.71

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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.