Home / 90,717.20-136,043.40-31,554.80

Finding the Fourth Proportional to 90,717.20, 136,043.40 and 31,554.80

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Solution

The fourth proportional to 90,717.20, 136,043.40 and 31,554.80 is: 47,320.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,717.20 : 136,043.40 = 31,554.80 : x
  2. Step 2: Convert to fraction form
    90,717.20/136,043.40 = 31,554.80/x
  3. Step 3: Cross multiply
    90,717.20x = 136,043.40 × 31,554.80
  4. Step 4: Simplify right side
    90,717.20x = 4,292,822,278.32
  5. Step 5: Solve for x
    x = 4,292,822,278.32/90,717.20
  6. Step 6: Final answer
    x = 47,320.93

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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.