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Finding the Fourth Proportional to 67,860.20, 101,636.70 and 40,212.20

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Solution

The fourth proportional to 67,860.20, 101,636.70 and 40,212.20 is: 60,227.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,860.20 : 101,636.70 = 40,212.20 : x
  2. Step 2: Convert to fraction form
    67,860.20/101,636.70 = 40,212.20/x
  3. Step 3: Cross multiply
    67,860.20x = 101,636.70 × 40,212.20
  4. Step 4: Simplify right side
    67,860.20x = 4,087,035,307.74
  5. Step 5: Solve for x
    x = 4,087,035,307.74/67,860.20
  6. Step 6: Final answer
    x = 60,227.28

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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.