Home / 81,207.56-112,025.40-54,351.20

Finding the Fourth Proportional to 81,207.56, 112,025.40 and 54,351.20

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Solution

The fourth proportional to 81,207.56, 112,025.40 and 54,351.20 is: 74,977.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,207.56 : 112,025.40 = 54,351.20 : x
  2. Step 2: Convert to fraction form
    81,207.56/112,025.40 = 54,351.20/x
  3. Step 3: Cross multiply
    81,207.56x = 112,025.40 × 54,351.20
  4. Step 4: Simplify right side
    81,207.56x = 6,088,714,920.48
  5. Step 5: Solve for x
    x = 6,088,714,920.48/81,207.56
  6. Step 6: Final answer
    x = 74,977.19

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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.