Home / 51,639.57-71,253.90-30,423.06

Finding the Fourth Proportional to 51,639.57, 71,253.90 and 30,423.06

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Solution

The fourth proportional to 51,639.57, 71,253.90 and 30,423.06 is: 41,978.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,639.57 : 71,253.90 = 30,423.06 : x
  2. Step 2: Convert to fraction form
    51,639.57/71,253.90 = 30,423.06/x
  3. Step 3: Cross multiply
    51,639.57x = 71,253.90 × 30,423.06
  4. Step 4: Simplify right side
    51,639.57x = 2,167,761,674.93
  5. Step 5: Solve for x
    x = 2,167,761,674.93/51,639.57
  6. Step 6: Final answer
    x = 41,978.69

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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.