Home / 90,934.84-136,421.16-38,344.78

Finding the Fourth Proportional to 90,934.84, 136,421.16 and 38,344.78

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Solution

The fourth proportional to 90,934.84, 136,421.16 and 38,344.78 is: 57,525.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,934.84 : 136,421.16 = 38,344.78 : x
  2. Step 2: Convert to fraction form
    90,934.84/136,421.16 = 38,344.78/x
  3. Step 3: Cross multiply
    90,934.84x = 136,421.16 × 38,344.78
  4. Step 4: Simplify right side
    90,934.84x = 5,231,039,367.54
  5. Step 5: Solve for x
    x = 5,231,039,367.54/90,934.84
  6. Step 6: Final answer
    x = 57,525.14

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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.