Home / 78,712.42-108,582.20-49,982.92

Finding the Fourth Proportional to 78,712.42, 108,582.20 and 49,982.92

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Solution

The fourth proportional to 78,712.42, 108,582.20 and 49,982.92 is: 68,950.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,712.42 : 108,582.20 = 49,982.92 : x
  2. Step 2: Convert to fraction form
    78,712.42/108,582.20 = 49,982.92/x
  3. Step 3: Cross multiply
    78,712.42x = 108,582.20 × 49,982.92
  4. Step 4: Simplify right side
    78,712.42x = 5,427,255,416.02
  5. Step 5: Solve for x
    x = 5,427,255,416.02/78,712.42
  6. Step 6: Final answer
    x = 68,950.43

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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.