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Finding the Fourth Proportional to 65,785.60, 98,678.40 and 54,850.60

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Solution

The fourth proportional to 65,785.60, 98,678.40 and 54,850.60 is: 82,275.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,785.60 : 98,678.40 = 54,850.60 : x
  2. Step 2: Convert to fraction form
    65,785.60/98,678.40 = 54,850.60/x
  3. Step 3: Cross multiply
    65,785.60x = 98,678.40 × 54,850.60
  4. Step 4: Simplify right side
    65,785.60x = 5,412,569,447.04
  5. Step 5: Solve for x
    x = 5,412,569,447.04/65,785.60
  6. Step 6: Final answer
    x = 82,275.90

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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.