Home / 54,659.55-81,989.36-42,197.78

Finding the Fourth Proportional to 54,659.55, 81,989.36 and 42,197.78

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Solution

The fourth proportional to 54,659.55, 81,989.36 and 42,197.78 is: 63,296.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,659.55 : 81,989.36 = 42,197.78 : x
  2. Step 2: Convert to fraction form
    54,659.55/81,989.36 = 42,197.78/x
  3. Step 3: Cross multiply
    54,659.55x = 81,989.36 × 42,197.78
  4. Step 4: Simplify right side
    54,659.55x = 3,459,768,975.62
  5. Step 5: Solve for x
    x = 3,459,768,975.62/54,659.55
  6. Step 6: Final answer
    x = 63,296.70

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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.