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Finding the Fourth Proportional to 54,885.71, 82,328.57 and 21,587.58

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Solution

The fourth proportional to 54,885.71, 82,328.57 and 21,587.58 is: 32,381.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,885.71 : 82,328.57 = 21,587.58 : x
  2. Step 2: Convert to fraction form
    54,885.71/82,328.57 = 21,587.58/x
  3. Step 3: Cross multiply
    54,885.71x = 82,328.57 × 21,587.58
  4. Step 4: Simplify right side
    54,885.71x = 1,777,274,564.18
  5. Step 5: Solve for x
    x = 1,777,274,564.18/54,885.71
  6. Step 6: Final answer
    x = 32,381.37

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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.