Home / 92,121.12-138,069.60-52,040.68

Finding the Fourth Proportional to 92,121.12, 138,069.60 and 52,040.68

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Solution

The fourth proportional to 92,121.12, 138,069.60 and 52,040.68 is: 77,997.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,121.12 : 138,069.60 = 52,040.68 : x
  2. Step 2: Convert to fraction form
    92,121.12/138,069.60 = 52,040.68/x
  3. Step 3: Cross multiply
    92,121.12x = 138,069.60 × 52,040.68
  4. Step 4: Simplify right side
    92,121.12x = 7,185,235,871.33
  5. Step 5: Solve for x
    x = 7,185,235,871.33/92,121.12
  6. Step 6: Final answer
    x = 77,997.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.