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Finding the Fourth Proportional to 54,658.40, 81,987.60 and 34,959.20

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Solution

The fourth proportional to 54,658.40, 81,987.60 and 34,959.20 is: 52,438.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,658.40 : 81,987.60 = 34,959.20 : x
  2. Step 2: Convert to fraction form
    54,658.40/81,987.60 = 34,959.20/x
  3. Step 3: Cross multiply
    54,658.40x = 81,987.60 × 34,959.20
  4. Step 4: Simplify right side
    54,658.40x = 2,866,220,905.92
  5. Step 5: Solve for x
    x = 2,866,220,905.92/54,658.40
  6. Step 6: Final answer
    x = 52,438.80

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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.