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Finding the Fourth Proportional to 66,341.58, 99,500.49 and 28,880.70

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Solution

The fourth proportional to 66,341.58, 99,500.49 and 28,880.70 is: 43,315.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,341.58 : 99,500.49 = 28,880.70 : x
  2. Step 2: Convert to fraction form
    66,341.58/99,500.49 = 28,880.70/x
  3. Step 3: Cross multiply
    66,341.58x = 99,500.49 × 28,880.70
  4. Step 4: Simplify right side
    66,341.58x = 2,873,643,801.54
  5. Step 5: Solve for x
    x = 2,873,643,801.54/66,341.58
  6. Step 6: Final answer
    x = 43,315.88

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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.