Home / 90,948.30-136,422.45-28,618.80

Finding the Fourth Proportional to 90,948.30, 136,422.45 and 28,618.80

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Solution

The fourth proportional to 90,948.30, 136,422.45 and 28,618.80 is: 42,928.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,948.30 : 136,422.45 = 28,618.80 : x
  2. Step 2: Convert to fraction form
    90,948.30/136,422.45 = 28,618.80/x
  3. Step 3: Cross multiply
    90,948.30x = 136,422.45 × 28,618.80
  4. Step 4: Simplify right side
    90,948.30x = 3,904,246,812.06
  5. Step 5: Solve for x
    x = 3,904,246,812.06/90,948.30
  6. Step 6: Final answer
    x = 42,928.20

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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.