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Finding the Fourth Proportional to 40,709.10, 61,063.65 and 28,899.30

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Solution

The fourth proportional to 40,709.10, 61,063.65 and 28,899.30 is: 43,348.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,709.10 : 61,063.65 = 28,899.30 : x
  2. Step 2: Convert to fraction form
    40,709.10/61,063.65 = 28,899.30/x
  3. Step 3: Cross multiply
    40,709.10x = 61,063.65 × 28,899.30
  4. Step 4: Simplify right side
    40,709.10x = 1,764,696,740.45
  5. Step 5: Solve for x
    x = 1,764,696,740.45/40,709.10
  6. Step 6: Final answer
    x = 43,348.95

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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.