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Finding the Fourth Proportional to 54,987.40, 82,481.10 and 48,645.10

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Solution

The fourth proportional to 54,987.40, 82,481.10 and 48,645.10 is: 72,967.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,987.40 : 82,481.10 = 48,645.10 : x
  2. Step 2: Convert to fraction form
    54,987.40/82,481.10 = 48,645.10/x
  3. Step 3: Cross multiply
    54,987.40x = 82,481.10 × 48,645.10
  4. Step 4: Simplify right side
    54,987.40x = 4,012,301,357.61
  5. Step 5: Solve for x
    x = 4,012,301,357.61/54,987.40
  6. Step 6: Final answer
    x = 72,967.65

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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.