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Finding the Fourth Proportional to 101,516.40, 140,090.40 and 55,575.92

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Solution

The fourth proportional to 101,516.40, 140,090.40 and 55,575.92 is: 76,693.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,516.40 : 140,090.40 = 55,575.92 : x
  2. Step 2: Convert to fraction form
    101,516.40/140,090.40 = 55,575.92/x
  3. Step 3: Cross multiply
    101,516.40x = 140,090.40 × 55,575.92
  4. Step 4: Simplify right side
    101,516.40x = 7,785,652,863.17
  5. Step 5: Solve for x
    x = 7,785,652,863.17/101,516.40
  6. Step 6: Final answer
    x = 76,693.55

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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.