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Finding the Fourth Proportional to 75,085.79, 103,576.79 and 48,198.11

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Solution

The fourth proportional to 75,085.79, 103,576.79 and 48,198.11 is: 66,486.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,085.79 : 103,576.79 = 48,198.11 : x
  2. Step 2: Convert to fraction form
    75,085.79/103,576.79 = 48,198.11/x
  3. Step 3: Cross multiply
    75,085.79x = 103,576.79 × 48,198.11
  4. Step 4: Simplify right side
    75,085.79x = 4,992,205,120.48
  5. Step 5: Solve for x
    x = 4,992,205,120.48/75,085.79
  6. Step 6: Final answer
    x = 66,486.69

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1.5x scale

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.