Home / 51,121.28-70,543.32-28,458.56

Finding the Fourth Proportional to 51,121.28, 70,543.32 and 28,458.56

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Solution

The fourth proportional to 51,121.28, 70,543.32 and 28,458.56 is: 39,270.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,121.28 : 70,543.32 = 28,458.56 : x
  2. Step 2: Convert to fraction form
    51,121.28/70,543.32 = 28,458.56/x
  3. Step 3: Cross multiply
    51,121.28x = 70,543.32 × 28,458.56
  4. Step 4: Simplify right side
    51,121.28x = 2,007,561,304.82
  5. Step 5: Solve for x
    x = 2,007,561,304.82/51,121.28
  6. Step 6: Final answer
    x = 39,270.56

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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.