Home / 31,146.80-46,720.20-25,679.30

Finding the Fourth Proportional to 31,146.80, 46,720.20 and 25,679.30

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Solution

The fourth proportional to 31,146.80, 46,720.20 and 25,679.30 is: 38,518.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,146.80 : 46,720.20 = 25,679.30 : x
  2. Step 2: Convert to fraction form
    31,146.80/46,720.20 = 25,679.30/x
  3. Step 3: Cross multiply
    31,146.80x = 46,720.20 × 25,679.30
  4. Step 4: Simplify right side
    31,146.80x = 1,199,742,031.86
  5. Step 5: Solve for x
    x = 1,199,742,031.86/31,146.80
  6. Step 6: Final answer
    x = 38,518.95

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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.