Home / 51,531.45-71,115.45-28,870.63

Finding the Fourth Proportional to 51,531.45, 71,115.45 and 28,870.63

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Solution

The fourth proportional to 51,531.45, 71,115.45 and 28,870.63 is: 39,842.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,531.45 : 71,115.45 = 28,870.63 : x
  2. Step 2: Convert to fraction form
    51,531.45/71,115.45 = 28,870.63/x
  3. Step 3: Cross multiply
    51,531.45x = 71,115.45 × 28,870.63
  4. Step 4: Simplify right side
    51,531.45x = 2,053,147,824.86
  5. Step 5: Solve for x
    x = 2,053,147,824.86/51,531.45
  6. Step 6: Final answer
    x = 39,842.62

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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.