Home / 51,530.87-71,117.19-28,869.72

Finding the Fourth Proportional to 51,530.87, 71,117.19 and 28,869.72

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Solution

The fourth proportional to 51,530.87, 71,117.19 and 28,869.72 is: 39,842.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,530.87 : 71,117.19 = 28,869.72 : x
  2. Step 2: Convert to fraction form
    51,530.87/71,117.19 = 28,869.72/x
  3. Step 3: Cross multiply
    51,530.87x = 71,117.19 × 28,869.72
  4. Step 4: Simplify right side
    51,530.87x = 2,053,133,362.49
  5. Step 5: Solve for x
    x = 2,053,133,362.49/51,530.87
  6. Step 6: Final answer
    x = 39,842.78

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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.