Home / 85,115.24-127,693.08-42,891.56

Finding the Fourth Proportional to 85,115.24, 127,693.08 and 42,891.56

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Solution

The fourth proportional to 85,115.24, 127,693.08 and 42,891.56 is: 64,347.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,115.24 : 127,693.08 = 42,891.56 : x
  2. Step 2: Convert to fraction form
    85,115.24/127,693.08 = 42,891.56/x
  3. Step 3: Cross multiply
    85,115.24x = 127,693.08 × 42,891.56
  4. Step 4: Simplify right side
    85,115.24x = 5,476,955,402.40
  5. Step 5: Solve for x
    x = 5,476,955,402.40/85,115.24
  6. Step 6: Final answer
    x = 64,347.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.