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Finding the Fourth Proportional to 187,690.72, 281,554.40 and 54,572

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Solution

The fourth proportional to 187,690.72, 281,554.40 and 54,572 is: 81,863.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,690.72 : 281,554.40 = 54,572 : x
  2. Step 2: Convert to fraction form
    187,690.72/281,554.40 = 54,572/x
  3. Step 3: Cross multiply
    187,690.72x = 281,554.40 × 54,572
  4. Step 4: Simplify right side
    187,690.72x = 15,364,986,716.80
  5. Step 5: Solve for x
    x = 15,364,986,716.80/187,690.72
  6. Step 6: Final answer
    x = 81,863.33

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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.