Home / 90,031.20-124,239.88-49,744.24

Finding the Fourth Proportional to 90,031.20, 124,239.88 and 49,744.24

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Solution

The fourth proportional to 90,031.20, 124,239.88 and 49,744.24 is: 68,645.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,031.20 : 124,239.88 = 49,744.24 : x
  2. Step 2: Convert to fraction form
    90,031.20/124,239.88 = 49,744.24/x
  3. Step 3: Cross multiply
    90,031.20x = 124,239.88 × 49,744.24
  4. Step 4: Simplify right side
    90,031.20x = 6,180,218,408.29
  5. Step 5: Solve for x
    x = 6,180,218,408.29/90,031.20
  6. Step 6: Final answer
    x = 68,645.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.