Home / 51,432-70,985.25-30,211.26

Finding the Fourth Proportional to 51,432, 70,985.25 and 30,211.26

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Solution

The fourth proportional to 51,432, 70,985.25 and 30,211.26 is: 41,696.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,432 : 70,985.25 = 30,211.26 : x
  2. Step 2: Convert to fraction form
    51,432/70,985.25 = 30,211.26/x
  3. Step 3: Cross multiply
    51,432x = 70,985.25 × 30,211.26
  4. Step 4: Simplify right side
    51,432x = 2,144,553,843.92
  5. Step 5: Solve for x
    x = 2,144,553,843.92/51,432
  6. Step 6: Final answer
    x = 41,696.88

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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.