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Finding the Fourth Proportional to 54,228.80, 81,440.40 and 39,454.40

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Solution

The fourth proportional to 54,228.80, 81,440.40 and 39,454.40 is: 59,252.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,228.80 : 81,440.40 = 39,454.40 : x
  2. Step 2: Convert to fraction form
    54,228.80/81,440.40 = 39,454.40/x
  3. Step 3: Cross multiply
    54,228.80x = 81,440.40 × 39,454.40
  4. Step 4: Simplify right side
    54,228.80x = 3,213,182,117.76
  5. Step 5: Solve for x
    x = 3,213,182,117.76/54,228.80
  6. Step 6: Final answer
    x = 59,252.32

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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.