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Finding the Fourth Proportional to 60,515.40, 90,729.90 and 34,228.20

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Solution

The fourth proportional to 60,515.40, 90,729.90 and 34,228.20 is: 51,317.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,515.40 : 90,729.90 = 34,228.20 : x
  2. Step 2: Convert to fraction form
    60,515.40/90,729.90 = 34,228.20/x
  3. Step 3: Cross multiply
    60,515.40x = 90,729.90 × 34,228.20
  4. Step 4: Simplify right side
    60,515.40x = 3,105,521,163.18
  5. Step 5: Solve for x
    x = 3,105,521,163.18/60,515.40
  6. Step 6: Final answer
    x = 51,317.87

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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.