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Finding the Fourth Proportional to 60,919.83, 91,379.75 and 40,138.47

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Solution

The fourth proportional to 60,919.83, 91,379.75 and 40,138.47 is: 60,207.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,919.83 : 91,379.75 = 40,138.47 : x
  2. Step 2: Convert to fraction form
    60,919.83/91,379.75 = 40,138.47/x
  3. Step 3: Cross multiply
    60,919.83x = 91,379.75 × 40,138.47
  4. Step 4: Simplify right side
    60,919.83x = 3,667,843,153.29
  5. Step 5: Solve for x
    x = 3,667,843,153.29/60,919.83
  6. Step 6: Final answer
    x = 60,207.71

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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.