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Finding the Fourth Proportional to 54,681.96, 82,020.20 and 21,408.12

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Solution

The fourth proportional to 54,681.96, 82,020.20 and 21,408.12 is: 32,111.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,681.96 : 82,020.20 = 21,408.12 : x
  2. Step 2: Convert to fraction form
    54,681.96/82,020.20 = 21,408.12/x
  3. Step 3: Cross multiply
    54,681.96x = 82,020.20 × 21,408.12
  4. Step 4: Simplify right side
    54,681.96x = 1,755,898,284.02
  5. Step 5: Solve for x
    x = 1,755,898,284.02/54,681.96
  6. Step 6: Final answer
    x = 32,111.11

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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.