Home / 51,531.87-71,113.38-28,870.79

Finding the Fourth Proportional to 51,531.87, 71,113.38 and 28,870.79

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Solution

The fourth proportional to 51,531.87, 71,113.38 and 28,870.79 is: 39,841.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,531.87 : 71,113.38 = 28,870.79 : x
  2. Step 2: Convert to fraction form
    51,531.87/71,113.38 = 28,870.79/x
  3. Step 3: Cross multiply
    51,531.87x = 71,113.38 × 28,870.79
  4. Step 4: Simplify right side
    51,531.87x = 2,053,099,618.15
  5. Step 5: Solve for x
    x = 2,053,099,618.15/51,531.87
  6. Step 6: Final answer
    x = 39,841.36

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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.