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Finding the Fourth Proportional to 43,382.70, 64,964.70 and 28,511.10

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Solution

The fourth proportional to 43,382.70, 64,964.70 and 28,511.10 is: 42,694.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,382.70 : 64,964.70 = 28,511.10 : x
  2. Step 2: Convert to fraction form
    43,382.70/64,964.70 = 28,511.10/x
  3. Step 3: Cross multiply
    43,382.70x = 64,964.70 × 28,511.10
  4. Step 4: Simplify right side
    43,382.70x = 1,852,215,058.17
  5. Step 5: Solve for x
    x = 1,852,215,058.17/43,382.70
  6. Step 6: Final answer
    x = 42,694.79

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1.5x scale

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.