Home / 90,677.80-136,061.40-40,793.20

Finding the Fourth Proportional to 90,677.80, 136,061.40 and 40,793.20

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Solution

The fourth proportional to 90,677.80, 136,061.40 and 40,793.20 is: 61,209.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,677.80 : 136,061.40 = 40,793.20 : x
  2. Step 2: Convert to fraction form
    90,677.80/136,061.40 = 40,793.20/x
  3. Step 3: Cross multiply
    90,677.80x = 136,061.40 × 40,793.20
  4. Step 4: Simplify right side
    90,677.80x = 5,550,379,902.48
  5. Step 5: Solve for x
    x = 5,550,379,902.48/90,677.80
  6. Step 6: Final answer
    x = 61,209.91

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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.