Home / 88,331.14-121,915.82-54,339.69

Finding the Fourth Proportional to 88,331.14, 121,915.82 and 54,339.69

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Solution

The fourth proportional to 88,331.14, 121,915.82 and 54,339.69 is: 75,000.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,331.14 : 121,915.82 = 54,339.69 : x
  2. Step 2: Convert to fraction form
    88,331.14/121,915.82 = 54,339.69/x
  3. Step 3: Cross multiply
    88,331.14x = 121,915.82 × 54,339.69
  4. Step 4: Simplify right side
    88,331.14x = 6,624,867,864.90
  5. Step 5: Solve for x
    x = 6,624,867,864.90/88,331.14
  6. Step 6: Final answer
    x = 75,000.37

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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.