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Finding the Fourth Proportional to 40,651.70, 60,978.62 and 11,070.14

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Solution

The fourth proportional to 40,651.70, 60,978.62 and 11,070.14 is: 16,605.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,651.70 : 60,978.62 = 11,070.14 : x
  2. Step 2: Convert to fraction form
    40,651.70/60,978.62 = 11,070.14/x
  3. Step 3: Cross multiply
    40,651.70x = 60,978.62 × 11,070.14
  4. Step 4: Simplify right side
    40,651.70x = 675,041,860.41
  5. Step 5: Solve for x
    x = 675,041,860.41/40,651.70
  6. Step 6: Final answer
    x = 16,605.50

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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.