Home / 78,864.43-118,198.20-39,432.82

Finding the Fourth Proportional to 78,864.43, 118,198.20 and 39,432.82

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Solution

The fourth proportional to 78,864.43, 118,198.20 and 39,432.82 is: 59,100.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,864.43 : 118,198.20 = 39,432.82 : x
  2. Step 2: Convert to fraction form
    78,864.43/118,198.20 = 39,432.82/x
  3. Step 3: Cross multiply
    78,864.43x = 118,198.20 × 39,432.82
  4. Step 4: Simplify right side
    78,864.43x = 4,660,888,344.92
  5. Step 5: Solve for x
    x = 4,660,888,344.92/78,864.43
  6. Step 6: Final answer
    x = 59,100.01

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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.