Home / 51,948.80-71,680.24-30,720.32

Finding the Fourth Proportional to 51,948.80, 71,680.24 and 30,720.32

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Solution

The fourth proportional to 51,948.80, 71,680.24 and 30,720.32 is: 42,388.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,948.80 : 71,680.24 = 30,720.32 : x
  2. Step 2: Convert to fraction form
    51,948.80/71,680.24 = 30,720.32/x
  3. Step 3: Cross multiply
    51,948.80x = 71,680.24 × 30,720.32
  4. Step 4: Simplify right side
    51,948.80x = 2,202,039,910.48
  5. Step 5: Solve for x
    x = 2,202,039,910.48/51,948.80
  6. Step 6: Final answer
    x = 42,388.66

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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.