Home / 81,047.18-121,522.74-27,720.29

Finding the Fourth Proportional to 81,047.18, 121,522.74 and 27,720.29

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Solution

The fourth proportional to 81,047.18, 121,522.74 and 27,720.29 is: 41,564.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,047.18 : 121,522.74 = 27,720.29 : x
  2. Step 2: Convert to fraction form
    81,047.18/121,522.74 = 27,720.29/x
  3. Step 3: Cross multiply
    81,047.18x = 121,522.74 × 27,720.29
  4. Step 4: Simplify right side
    81,047.18x = 3,368,645,594.39
  5. Step 5: Solve for x
    x = 3,368,645,594.39/81,047.18
  6. Step 6: Final answer
    x = 41,564.01

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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.