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Finding the Fourth Proportional to 40,586.40, 60,879.60 and 30,744.90

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Solution

The fourth proportional to 40,586.40, 60,879.60 and 30,744.90 is: 46,117.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,586.40 : 60,879.60 = 30,744.90 : x
  2. Step 2: Convert to fraction form
    40,586.40/60,879.60 = 30,744.90/x
  3. Step 3: Cross multiply
    40,586.40x = 60,879.60 × 30,744.90
  4. Step 4: Simplify right side
    40,586.40x = 1,871,737,214.04
  5. Step 5: Solve for x
    x = 1,871,737,214.04/40,586.40
  6. Step 6: Final answer
    x = 46,117.35

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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.