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Finding the Fourth Proportional to 97,079.92, 133,974.60 and 54,641.20

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Solution

The fourth proportional to 97,079.92, 133,974.60 and 54,641.20 is: 75,407.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,079.92 : 133,974.60 = 54,641.20 : x
  2. Step 2: Convert to fraction form
    97,079.92/133,974.60 = 54,641.20/x
  3. Step 3: Cross multiply
    97,079.92x = 133,974.60 × 54,641.20
  4. Step 4: Simplify right side
    97,079.92x = 7,320,532,913.52
  5. Step 5: Solve for x
    x = 7,320,532,913.52/97,079.92
  6. Step 6: Final answer
    x = 75,407.28

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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.