Home / 87,530.86-120,538.35-76,040.53

Finding the Fourth Proportional to 87,530.86, 120,538.35 and 76,040.53

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Solution

The fourth proportional to 87,530.86, 120,538.35 and 76,040.53 is: 104,715.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,530.86 : 120,538.35 = 76,040.53 : x
  2. Step 2: Convert to fraction form
    87,530.86/120,538.35 = 76,040.53/x
  3. Step 3: Cross multiply
    87,530.86x = 120,538.35 × 76,040.53
  4. Step 4: Simplify right side
    87,530.86x = 9,165,800,019.33
  5. Step 5: Solve for x
    x = 9,165,800,019.33/87,530.86
  6. Step 6: Final answer
    x = 104,715.07

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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.