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Finding the Fourth Proportional to 45,969.51, 68,952.90 and 12,691.61

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Solution

The fourth proportional to 45,969.51, 68,952.90 and 12,691.61 is: 19,037.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,969.51 : 68,952.90 = 12,691.61 : x
  2. Step 2: Convert to fraction form
    45,969.51/68,952.90 = 12,691.61/x
  3. Step 3: Cross multiply
    45,969.51x = 68,952.90 × 12,691.61
  4. Step 4: Simplify right side
    45,969.51x = 875,123,315.17
  5. Step 5: Solve for x
    x = 875,123,315.17/45,969.51
  6. Step 6: Final answer
    x = 19,037.04

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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.