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Finding the Fourth Proportional to 31,959.87, 44,069.99 and 21,757.50

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Solution

The fourth proportional to 31,959.87, 44,069.99 and 21,757.50 is: 30,001.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,959.87 : 44,069.99 = 21,757.50 : x
  2. Step 2: Convert to fraction form
    31,959.87/44,069.99 = 21,757.50/x
  3. Step 3: Cross multiply
    31,959.87x = 44,069.99 × 21,757.50
  4. Step 4: Simplify right side
    31,959.87x = 958,852,698.64
  5. Step 5: Solve for x
    x = 958,852,698.64/31,959.87
  6. Step 6: Final answer
    x = 30,001.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.