Home / 91,786.80-137,572.20-52,381.20

Finding the Fourth Proportional to 91,786.80, 137,572.20 and 52,381.20

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Solution

The fourth proportional to 91,786.80, 137,572.20 and 52,381.20 is: 78,510.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,786.80 : 137,572.20 = 52,381.20 : x
  2. Step 2: Convert to fraction form
    91,786.80/137,572.20 = 52,381.20/x
  3. Step 3: Cross multiply
    91,786.80x = 137,572.20 × 52,381.20
  4. Step 4: Simplify right side
    91,786.80x = 7,206,196,922.64
  5. Step 5: Solve for x
    x = 7,206,196,922.64/91,786.80
  6. Step 6: Final answer
    x = 78,510.17

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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.