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Finding the Fourth Proportional to 75,911.57, 113,855.64 and 25,980.19

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Solution

The fourth proportional to 75,911.57, 113,855.64 and 25,980.19 is: 38,966.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,911.57 : 113,855.64 = 25,980.19 : x
  2. Step 2: Convert to fraction form
    75,911.57/113,855.64 = 25,980.19/x
  3. Step 3: Cross multiply
    75,911.57x = 113,855.64 × 25,980.19
  4. Step 4: Simplify right side
    75,911.57x = 2,957,991,454.68
  5. Step 5: Solve for x
    x = 2,957,991,454.68/75,911.57
  6. Step 6: Final answer
    x = 38,966.28

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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.