Home / 90,133.28-124,381.68-49,849.28

Finding the Fourth Proportional to 90,133.28, 124,381.68 and 49,849.28

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Solution

The fourth proportional to 90,133.28, 124,381.68 and 49,849.28 is: 68,790.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,133.28 : 124,381.68 = 49,849.28 : x
  2. Step 2: Convert to fraction form
    90,133.28/124,381.68 = 49,849.28/x
  3. Step 3: Cross multiply
    90,133.28x = 124,381.68 × 49,849.28
  4. Step 4: Simplify right side
    90,133.28x = 6,200,337,193.19
  5. Step 5: Solve for x
    x = 6,200,337,193.19/90,133.28
  6. Step 6: Final answer
    x = 68,790.76

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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.