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Finding the Fourth Proportional to 73,387.78, 101,275.05 and 39,853.54

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Solution

The fourth proportional to 73,387.78, 101,275.05 and 39,853.54 is: 54,997.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,387.78 : 101,275.05 = 39,853.54 : x
  2. Step 2: Convert to fraction form
    73,387.78/101,275.05 = 39,853.54/x
  3. Step 3: Cross multiply
    73,387.78x = 101,275.05 × 39,853.54
  4. Step 4: Simplify right side
    73,387.78x = 4,036,169,256.18
  5. Step 5: Solve for x
    x = 4,036,169,256.18/73,387.78
  6. Step 6: Final answer
    x = 54,997.84

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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.