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Finding the Fourth Proportional to 101,010.32, 139,387.92 and 55,685.92

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Solution

The fourth proportional to 101,010.32, 139,387.92 and 55,685.92 is: 76,843.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,010.32 : 139,387.92 = 55,685.92 : x
  2. Step 2: Convert to fraction form
    101,010.32/139,387.92 = 55,685.92/x
  3. Step 3: Cross multiply
    101,010.32x = 139,387.92 × 55,685.92
  4. Step 4: Simplify right side
    101,010.32x = 7,761,944,562.09
  5. Step 5: Solve for x
    x = 7,761,944,562.09/101,010.32
  6. Step 6: Final answer
    x = 76,843.08

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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.