Home / 87,933.12-121,240.80-61,097.92

Finding the Fourth Proportional to 87,933.12, 121,240.80 and 61,097.92

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Solution

The fourth proportional to 87,933.12, 121,240.80 and 61,097.92 is: 84,240.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,933.12 : 121,240.80 = 61,097.92 : x
  2. Step 2: Convert to fraction form
    87,933.12/121,240.80 = 61,097.92/x
  3. Step 3: Cross multiply
    87,933.12x = 121,240.80 × 61,097.92
  4. Step 4: Simplify right side
    87,933.12x = 7,407,560,699.14
  5. Step 5: Solve for x
    x = 7,407,560,699.14/87,933.12
  6. Step 6: Final answer
    x = 84,240.85

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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.