Home / 51,115.20-70,541.04-28,455.12

Finding the Fourth Proportional to 51,115.20, 70,541.04 and 28,455.12

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Solution

The fourth proportional to 51,115.20, 70,541.04 and 28,455.12 is: 39,269.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,115.20 : 70,541.04 = 28,455.12 : x
  2. Step 2: Convert to fraction form
    51,115.20/70,541.04 = 28,455.12/x
  3. Step 3: Cross multiply
    51,115.20x = 70,541.04 × 28,455.12
  4. Step 4: Simplify right side
    51,115.20x = 2,007,253,758.12
  5. Step 5: Solve for x
    x = 2,007,253,758.12/51,115.20
  6. Step 6: Final answer
    x = 39,269.21

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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.