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Finding the Fourth Proportional to 45,673.68, 68,509.48 and 21,049.68

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Solution

The fourth proportional to 45,673.68, 68,509.48 and 21,049.68 is: 31,574.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,673.68 : 68,509.48 = 21,049.68 : x
  2. Step 2: Convert to fraction form
    45,673.68/68,509.48 = 21,049.68/x
  3. Step 3: Cross multiply
    45,673.68x = 68,509.48 × 21,049.68
  4. Step 4: Simplify right side
    45,673.68x = 1,442,102,630.97
  5. Step 5: Solve for x
    x = 1,442,102,630.97/45,673.68
  6. Step 6: Final answer
    x = 31,574.04

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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.