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Finding the Fourth Proportional to 45,377.01, 68,065.65 and 15,787.80

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Solution

The fourth proportional to 45,377.01, 68,065.65 and 15,787.80 is: 23,681.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,377.01 : 68,065.65 = 15,787.80 : x
  2. Step 2: Convert to fraction form
    45,377.01/68,065.65 = 15,787.80/x
  3. Step 3: Cross multiply
    45,377.01x = 68,065.65 × 15,787.80
  4. Step 4: Simplify right side
    45,377.01x = 1,074,606,869.07
  5. Step 5: Solve for x
    x = 1,074,606,869.07/45,377.01
  6. Step 6: Final answer
    x = 23,681.75

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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.