Home / 84,630.42-127,028.25-40,287.78

Finding the Fourth Proportional to 84,630.42, 127,028.25 and 40,287.78

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Solution

The fourth proportional to 84,630.42, 127,028.25 and 40,287.78 is: 60,471.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,630.42 : 127,028.25 = 40,287.78 : x
  2. Step 2: Convert to fraction form
    84,630.42/127,028.25 = 40,287.78/x
  3. Step 3: Cross multiply
    84,630.42x = 127,028.25 × 40,287.78
  4. Step 4: Simplify right side
    84,630.42x = 5,117,686,189.79
  5. Step 5: Solve for x
    x = 5,117,686,189.79/84,630.42
  6. Step 6: Final answer
    x = 60,471.00

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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.