Home / 49,615.20-74,422.68-12,679.20

Finding the Fourth Proportional to 49,615.20, 74,422.68 and 12,679.20

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Solution

The fourth proportional to 49,615.20, 74,422.68 and 12,679.20 is: 19,018.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,615.20 : 74,422.68 = 12,679.20 : x
  2. Step 2: Convert to fraction form
    49,615.20/74,422.68 = 12,679.20/x
  3. Step 3: Cross multiply
    49,615.20x = 74,422.68 × 12,679.20
  4. Step 4: Simplify right side
    49,615.20x = 943,620,044.26
  5. Step 5: Solve for x
    x = 943,620,044.26/49,615.20
  6. Step 6: Final answer
    x = 19,018.77

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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.