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Finding the Fourth Proportional to 60,129.75, 90,225.74 and 43,626

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Solution

The fourth proportional to 60,129.75, 90,225.74 and 43,626 is: 65,461.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,129.75 : 90,225.74 = 43,626 : x
  2. Step 2: Convert to fraction form
    60,129.75/90,225.74 = 43,626/x
  3. Step 3: Cross multiply
    60,129.75x = 90,225.74 × 43,626
  4. Step 4: Simplify right side
    60,129.75x = 3,936,188,133.24
  5. Step 5: Solve for x
    x = 3,936,188,133.24/60,129.75
  6. Step 6: Final answer
    x = 65,461.57

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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.