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Finding the Fourth Proportional to 70,218.75, 96,901.86 and 38,387.64

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Solution

The fourth proportional to 70,218.75, 96,901.86 and 38,387.64 is: 52,974.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,218.75 : 96,901.86 = 38,387.64 : x
  2. Step 2: Convert to fraction form
    70,218.75/96,901.86 = 38,387.64/x
  3. Step 3: Cross multiply
    70,218.75x = 96,901.86 × 38,387.64
  4. Step 4: Simplify right side
    70,218.75x = 3,719,833,717.01
  5. Step 5: Solve for x
    x = 3,719,833,717.01/70,218.75
  6. Step 6: Final answer
    x = 52,974.93

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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.