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Finding the Fourth Proportional to 76,139.91, 114,217.52 and 26,213.40

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Solution

The fourth proportional to 76,139.91, 114,217.52 and 26,213.40 is: 39,322.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,139.91 : 114,217.52 = 26,213.40 : x
  2. Step 2: Convert to fraction form
    76,139.91/114,217.52 = 26,213.40/x
  3. Step 3: Cross multiply
    76,139.91x = 114,217.52 × 26,213.40
  4. Step 4: Simplify right side
    76,139.91x = 2,994,029,407.70
  5. Step 5: Solve for x
    x = 2,994,029,407.70/76,139.91
  6. Step 6: Final answer
    x = 39,322.73

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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.