Home / 51,789.85-71,510.21-40,439.66

Finding the Fourth Proportional to 51,789.85, 71,510.21 and 40,439.66

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Solution

The fourth proportional to 51,789.85, 71,510.21 and 40,439.66 is: 55,838.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,789.85 : 71,510.21 = 40,439.66 : x
  2. Step 2: Convert to fraction form
    51,789.85/71,510.21 = 40,439.66/x
  3. Step 3: Cross multiply
    51,789.85x = 71,510.21 × 40,439.66
  4. Step 4: Simplify right side
    51,789.85x = 2,891,848,019.18
  5. Step 5: Solve for x
    x = 2,891,848,019.18/51,789.85
  6. Step 6: Final answer
    x = 55,838.13

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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.