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Finding the Fourth Proportional to 101,011.38, 139,396.65 and 55,691.01

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Solution

The fourth proportional to 101,011.38, 139,396.65 and 55,691.01 is: 76,854.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,011.38 : 139,396.65 = 55,691.01 : x
  2. Step 2: Convert to fraction form
    101,011.38/139,396.65 = 55,691.01/x
  3. Step 3: Cross multiply
    101,011.38x = 139,396.65 × 55,691.01
  4. Step 4: Simplify right side
    101,011.38x = 7,763,140,229.12
  5. Step 5: Solve for x
    x = 7,763,140,229.12/101,011.38
  6. Step 6: Final answer
    x = 76,854.12

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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.