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Finding the Fourth Proportional to 98,785.38, 136,324 and 53,463.42

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Solution

The fourth proportional to 98,785.38, 136,324 and 53,463.42 is: 73,779.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,785.38 : 136,324 = 53,463.42 : x
  2. Step 2: Convert to fraction form
    98,785.38/136,324 = 53,463.42/x
  3. Step 3: Cross multiply
    98,785.38x = 136,324 × 53,463.42
  4. Step 4: Simplify right side
    98,785.38x = 7,288,347,268.08
  5. Step 5: Solve for x
    x = 7,288,347,268.08/98,785.38
  6. Step 6: Final answer
    x = 73,779.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.