Home / 40,138.16-55,385.40-23,143.04

Finding the Fourth Proportional to 40,138.16, 55,385.40 and 23,143.04

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Solution

The fourth proportional to 40,138.16, 55,385.40 and 23,143.04 is: 31,934.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,138.16 : 55,385.40 = 23,143.04 : x
  2. Step 2: Convert to fraction form
    40,138.16/55,385.40 = 23,143.04/x
  3. Step 3: Cross multiply
    40,138.16x = 55,385.40 × 23,143.04
  4. Step 4: Simplify right side
    40,138.16x = 1,281,786,527.62
  5. Step 5: Solve for x
    x = 1,281,786,527.62/40,138.16
  6. Step 6: Final answer
    x = 31,934.36

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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.