Home / 90,862.29-136,315.31-38,286.81

Finding the Fourth Proportional to 90,862.29, 136,315.31 and 38,286.81

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Solution

The fourth proportional to 90,862.29, 136,315.31 and 38,286.81 is: 57,439.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,862.29 : 136,315.31 = 38,286.81 : x
  2. Step 2: Convert to fraction form
    90,862.29/136,315.31 = 38,286.81/x
  3. Step 3: Cross multiply
    90,862.29x = 136,315.31 × 38,286.81
  4. Step 4: Simplify right side
    90,862.29x = 5,219,078,182.63
  5. Step 5: Solve for x
    x = 5,219,078,182.63/90,862.29
  6. Step 6: Final answer
    x = 57,439.43

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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.