Home / 81,027.47-121,541.20-21,863.13

Finding the Fourth Proportional to 81,027.47, 121,541.20 and 21,863.13

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Solution

The fourth proportional to 81,027.47, 121,541.20 and 21,863.13 is: 32,794.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,027.47 : 121,541.20 = 21,863.13 : x
  2. Step 2: Convert to fraction form
    81,027.47/121,541.20 = 21,863.13/x
  3. Step 3: Cross multiply
    81,027.47x = 121,541.20 × 21,863.13
  4. Step 4: Simplify right side
    81,027.47x = 2,657,270,946.64
  5. Step 5: Solve for x
    x = 2,657,270,946.64/81,027.47
  6. Step 6: Final answer
    x = 32,794.69

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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.