Home / 67,676.43-93,403.47-38,990.62

Finding the Fourth Proportional to 67,676.43, 93,403.47 and 38,990.62

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Solution

The fourth proportional to 67,676.43, 93,403.47 and 38,990.62 is: 53,812.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,676.43 : 93,403.47 = 38,990.62 : x
  2. Step 2: Convert to fraction form
    67,676.43/93,403.47 = 38,990.62/x
  3. Step 3: Cross multiply
    67,676.43x = 93,403.47 × 38,990.62
  4. Step 4: Simplify right side
    67,676.43x = 3,641,859,205.45
  5. Step 5: Solve for x
    x = 3,641,859,205.45/67,676.43
  6. Step 6: Final answer
    x = 53,812.82

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1.5x scale

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.