Home / 90,945.36-136,422.36-28,620.72

Finding the Fourth Proportional to 90,945.36, 136,422.36 and 28,620.72

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Solution

The fourth proportional to 90,945.36, 136,422.36 and 28,620.72 is: 42,932.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,945.36 : 136,422.36 = 28,620.72 : x
  2. Step 2: Convert to fraction form
    90,945.36/136,422.36 = 28,620.72/x
  3. Step 3: Cross multiply
    90,945.36x = 136,422.36 × 28,620.72
  4. Step 4: Simplify right side
    90,945.36x = 3,904,506,167.30
  5. Step 5: Solve for x
    x = 3,904,506,167.30/90,945.36
  6. Step 6: Final answer
    x = 42,932.44

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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.