Home / 54,081.60-81,038.79-42,207.21

Finding the Fourth Proportional to 54,081.60, 81,038.79 and 42,207.21

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Solution

The fourth proportional to 54,081.60, 81,038.79 and 42,207.21 is: 63,245.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,081.60 : 81,038.79 = 42,207.21 : x
  2. Step 2: Convert to fraction form
    54,081.60/81,038.79 = 42,207.21/x
  3. Step 3: Cross multiply
    54,081.60x = 81,038.79 × 42,207.21
  4. Step 4: Simplify right side
    54,081.60x = 3,420,421,227.68
  5. Step 5: Solve for x
    x = 3,420,421,227.68/54,081.60
  6. Step 6: Final answer
    x = 63,245.56

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1.5x scale

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.