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Finding the Fourth Proportional to 87,266, 130,899 and 21,602

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Solution

The fourth proportional to 87,266, 130,899 and 21,602 is: 32,403

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,266 : 130,899 = 21,602 : x
  2. Step 2: Convert to fraction form
    87,266/130,899 = 21,602/x
  3. Step 3: Cross multiply
    87,266x = 130,899 × 21,602
  4. Step 4: Simplify right side
    87,266x = 2,827,680,198
  5. Step 5: Solve for x
    x = 2,827,680,198/87,266
  6. Step 6: Final answer
    x = 32,403

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.