Home / 84,719.56-127,042.42-28,549.20

Finding the Fourth Proportional to 84,719.56, 127,042.42 and 28,549.20

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Solution

The fourth proportional to 84,719.56, 127,042.42 and 28,549.20 is: 42,811.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,719.56 : 127,042.42 = 28,549.20 : x
  2. Step 2: Convert to fraction form
    84,719.56/127,042.42 = 28,549.20/x
  3. Step 3: Cross multiply
    84,719.56x = 127,042.42 × 28,549.20
  4. Step 4: Simplify right side
    84,719.56x = 3,626,959,457.06
  5. Step 5: Solve for x
    x = 3,626,959,457.06/84,719.56
  6. Step 6: Final answer
    x = 42,811.36

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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.