Home / 78,306.04-108,008.80-49,998.97

Finding the Fourth Proportional to 78,306.04, 108,008.80 and 49,998.97

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Solution

The fourth proportional to 78,306.04, 108,008.80 and 49,998.97 is: 68,964.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,306.04 : 108,008.80 = 49,998.97 : x
  2. Step 2: Convert to fraction form
    78,306.04/108,008.80 = 49,998.97/x
  3. Step 3: Cross multiply
    78,306.04x = 108,008.80 × 49,998.97
  4. Step 4: Simplify right side
    78,306.04x = 5,400,328,750.94
  5. Step 5: Solve for x
    x = 5,400,328,750.94/78,306.04
  6. Step 6: Final answer
    x = 68,964.40

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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.