Home / 45,385.87-68,069.80-43,135.47

Finding the Fourth Proportional to 45,385.87, 68,069.80 and 43,135.47

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Solution

The fourth proportional to 45,385.87, 68,069.80 and 43,135.47 is: 64,694.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,385.87 : 68,069.80 = 43,135.47 : x
  2. Step 2: Convert to fraction form
    45,385.87/68,069.80 = 43,135.47/x
  3. Step 3: Cross multiply
    45,385.87x = 68,069.80 × 43,135.47
  4. Step 4: Simplify right side
    45,385.87x = 2,936,222,815.81
  5. Step 5: Solve for x
    x = 2,936,222,815.81/45,385.87
  6. Step 6: Final answer
    x = 64,694.65

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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.