Home / 81,427.20-112,371.48-54,551.40

Finding the Fourth Proportional to 81,427.20, 112,371.48 and 54,551.40

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Solution

The fourth proportional to 81,427.20, 112,371.48 and 54,551.40 is: 75,282.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,427.20 : 112,371.48 = 54,551.40 : x
  2. Step 2: Convert to fraction form
    81,427.20/112,371.48 = 54,551.40/x
  3. Step 3: Cross multiply
    81,427.20x = 112,371.48 × 54,551.40
  4. Step 4: Simplify right side
    81,427.20x = 6,130,021,554.07
  5. Step 5: Solve for x
    x = 6,130,021,554.07/81,427.20
  6. Step 6: Final answer
    x = 75,282.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.