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Finding the Fourth Proportional to 75,506.70, 113,273.72 and 31,108.78

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Solution

The fourth proportional to 75,506.70, 113,273.72 and 31,108.78 is: 46,668.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,506.70 : 113,273.72 = 31,108.78 : x
  2. Step 2: Convert to fraction form
    75,506.70/113,273.72 = 31,108.78/x
  3. Step 3: Cross multiply
    75,506.70x = 113,273.72 × 31,108.78
  4. Step 4: Simplify right side
    75,506.70x = 3,523,807,235.26
  5. Step 5: Solve for x
    x = 3,523,807,235.26/75,506.70
  6. Step 6: Final answer
    x = 46,668.80

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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.