Home / 84,875.43-127,309.91-28,719.75

Finding the Fourth Proportional to 84,875.43, 127,309.91 and 28,719.75

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Solution

The fourth proportional to 84,875.43, 127,309.91 and 28,719.75 is: 43,078.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,875.43 : 127,309.91 = 28,719.75 : x
  2. Step 2: Convert to fraction form
    84,875.43/127,309.91 = 28,719.75/x
  3. Step 3: Cross multiply
    84,875.43x = 127,309.91 × 28,719.75
  4. Step 4: Simplify right side
    84,875.43x = 3,656,308,644.12
  5. Step 5: Solve for x
    x = 3,656,308,644.12/84,875.43
  6. Step 6: Final answer
    x = 43,078.53

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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.