Home / 39,490.72-54,510.17-31,439.18

Finding the Fourth Proportional to 39,490.72, 54,510.17 and 31,439.18

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Solution

The fourth proportional to 39,490.72, 54,510.17 and 31,439.18 is: 43,396.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,490.72 : 54,510.17 = 31,439.18 : x
  2. Step 2: Convert to fraction form
    39,490.72/54,510.17 = 31,439.18/x
  3. Step 3: Cross multiply
    39,490.72x = 54,510.17 × 31,439.18
  4. Step 4: Simplify right side
    39,490.72x = 1,713,755,025.54
  5. Step 5: Solve for x
    x = 1,713,755,025.54/39,490.72
  6. Step 6: Final answer
    x = 43,396.40

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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.