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Finding the Fourth Proportional to 43,754.30, 60,359.90 and 28,640.30

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Solution

The fourth proportional to 43,754.30, 60,359.90 and 28,640.30 is: 39,509.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,754.30 : 60,359.90 = 28,640.30 : x
  2. Step 2: Convert to fraction form
    43,754.30/60,359.90 = 28,640.30/x
  3. Step 3: Cross multiply
    43,754.30x = 60,359.90 × 28,640.30
  4. Step 4: Simplify right side
    43,754.30x = 1,728,725,643.97
  5. Step 5: Solve for x
    x = 1,728,725,643.97/43,754.30
  6. Step 6: Final answer
    x = 39,509.85

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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.