Home / 90,843.03-136,265.13-31,678.47

Finding the Fourth Proportional to 90,843.03, 136,265.13 and 31,678.47

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Solution

The fourth proportional to 90,843.03, 136,265.13 and 31,678.47 is: 47,517.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,843.03 : 136,265.13 = 31,678.47 : x
  2. Step 2: Convert to fraction form
    90,843.03/136,265.13 = 31,678.47/x
  3. Step 3: Cross multiply
    90,843.03x = 136,265.13 × 31,678.47
  4. Step 4: Simplify right side
    90,843.03x = 4,316,670,832.75
  5. Step 5: Solve for x
    x = 4,316,670,832.75/90,843.03
  6. Step 6: Final answer
    x = 47,517.91

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1.5x scale

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.