Home / 51,115.52-70,541.28-28,455.68

Finding the Fourth Proportional to 51,115.52, 70,541.28 and 28,455.68

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Solution

The fourth proportional to 51,115.52, 70,541.28 and 28,455.68 is: 39,269.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,115.52 : 70,541.28 = 28,455.68 : x
  2. Step 2: Convert to fraction form
    51,115.52/70,541.28 = 28,455.68/x
  3. Step 3: Cross multiply
    51,115.52x = 70,541.28 × 28,455.68
  4. Step 4: Simplify right side
    51,115.52x = 2,007,300,090.47
  5. Step 5: Solve for x
    x = 2,007,300,090.47/51,115.52
  6. Step 6: Final answer
    x = 39,269.88

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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.