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Finding the Fourth Proportional to 101,679.57, 140,318.80 and 56,358.52

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Solution

The fourth proportional to 101,679.57, 140,318.80 and 56,358.52 is: 77,775.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,679.57 : 140,318.80 = 56,358.52 : x
  2. Step 2: Convert to fraction form
    101,679.57/140,318.80 = 56,358.52/x
  3. Step 3: Cross multiply
    101,679.57x = 140,318.80 × 56,358.52
  4. Step 4: Simplify right side
    101,679.57x = 7,908,159,404.48
  5. Step 5: Solve for x
    x = 7,908,159,404.48/101,679.57
  6. Step 6: Final answer
    x = 77,775.30

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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.