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Finding the Fourth Proportional to 79,390.87, 119,061.68 and 26,788.05

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Solution

The fourth proportional to 79,390.87, 119,061.68 and 26,788.05 is: 40,173.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,390.87 : 119,061.68 = 26,788.05 : x
  2. Step 2: Convert to fraction form
    79,390.87/119,061.68 = 26,788.05/x
  3. Step 3: Cross multiply
    79,390.87x = 119,061.68 × 26,788.05
  4. Step 4: Simplify right side
    79,390.87x = 3,189,430,236.92
  5. Step 5: Solve for x
    x = 3,189,430,236.92/79,390.87
  6. Step 6: Final answer
    x = 40,173.77

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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.