Home / 90,716.70-136,042.65-31,554.30

Finding the Fourth Proportional to 90,716.70, 136,042.65 and 31,554.30

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Solution

The fourth proportional to 90,716.70, 136,042.65 and 31,554.30 is: 47,320.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,716.70 : 136,042.65 = 31,554.30 : x
  2. Step 2: Convert to fraction form
    90,716.70/136,042.65 = 31,554.30/x
  3. Step 3: Cross multiply
    90,716.70x = 136,042.65 × 31,554.30
  4. Step 4: Simplify right side
    90,716.70x = 4,292,730,590.90
  5. Step 5: Solve for x
    x = 4,292,730,590.90/90,716.70
  6. Step 6: Final answer
    x = 47,320.18

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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.