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Finding the Fourth Proportional to 73,085.76, 100,853.28 and 43,272

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Solution

The fourth proportional to 73,085.76, 100,853.28 and 43,272 is: 59,712.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,085.76 : 100,853.28 = 43,272 : x
  2. Step 2: Convert to fraction form
    73,085.76/100,853.28 = 43,272/x
  3. Step 3: Cross multiply
    73,085.76x = 100,853.28 × 43,272
  4. Step 4: Simplify right side
    73,085.76x = 4,364,123,132.16
  5. Step 5: Solve for x
    x = 4,364,123,132.16/73,085.76
  6. Step 6: Final answer
    x = 59,712.36

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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.