Home / 88,149.12-121,561.92-57,960

Finding the Fourth Proportional to 88,149.12, 121,561.92 and 57,960

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Solution

The fourth proportional to 88,149.12, 121,561.92 and 57,960 is: 79,929.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,149.12 : 121,561.92 = 57,960 : x
  2. Step 2: Convert to fraction form
    88,149.12/121,561.92 = 57,960/x
  3. Step 3: Cross multiply
    88,149.12x = 121,561.92 × 57,960
  4. Step 4: Simplify right side
    88,149.12x = 7,045,728,883.20
  5. Step 5: Solve for x
    x = 7,045,728,883.20/88,149.12
  6. Step 6: Final answer
    x = 79,929.66

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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.