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Finding the Fourth Proportional to 75,586.40, 113,379.60 and 25,679.60

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Solution

The fourth proportional to 75,586.40, 113,379.60 and 25,679.60 is: 38,519.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,586.40 : 113,379.60 = 25,679.60 : x
  2. Step 2: Convert to fraction form
    75,586.40/113,379.60 = 25,679.60/x
  3. Step 3: Cross multiply
    75,586.40x = 113,379.60 × 25,679.60
  4. Step 4: Simplify right side
    75,586.40x = 2,911,542,776.16
  5. Step 5: Solve for x
    x = 2,911,542,776.16/75,586.40
  6. Step 6: Final answer
    x = 38,519.40

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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.