Home / 90,828.40-136,103.80-38,209.04

Finding the Fourth Proportional to 90,828.40, 136,103.80 and 38,209.04

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Solution

The fourth proportional to 90,828.40, 136,103.80 and 38,209.04 is: 57,255.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,828.40 : 136,103.80 = 38,209.04 : x
  2. Step 2: Convert to fraction form
    90,828.40/136,103.80 = 38,209.04/x
  3. Step 3: Cross multiply
    90,828.40x = 136,103.80 × 38,209.04
  4. Step 4: Simplify right side
    90,828.40x = 5,200,395,538.35
  5. Step 5: Solve for x
    x = 5,200,395,538.35/90,828.40
  6. Step 6: Final answer
    x = 57,255.17

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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.