Home / 101,011.68-139,397.09-55,691.28

Finding the Fourth Proportional to 101,011.68, 139,397.09 and 55,691.28

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Solution

The fourth proportional to 101,011.68, 139,397.09 and 55,691.28 is: 76,854.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,011.68 : 139,397.09 = 55,691.28 : x
  2. Step 2: Convert to fraction form
    101,011.68/139,397.09 = 55,691.28/x
  3. Step 3: Cross multiply
    101,011.68x = 139,397.09 × 55,691.28
  4. Step 4: Simplify right side
    101,011.68x = 7,763,202,091.92
  5. Step 5: Solve for x
    x = 7,763,202,091.92/101,011.68
  6. Step 6: Final answer
    x = 76,854.50

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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.