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Finding the Fourth Proportional to 57,553.80, 79,436.49 and 38,679.99

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Solution

The fourth proportional to 57,553.80, 79,436.49 and 38,679.99 is: 53,386.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,553.80 : 79,436.49 = 38,679.99 : x
  2. Step 2: Convert to fraction form
    57,553.80/79,436.49 = 38,679.99/x
  3. Step 3: Cross multiply
    57,553.80x = 79,436.49 × 38,679.99
  4. Step 4: Simplify right side
    57,553.80x = 3,072,602,638.84
  5. Step 5: Solve for x
    x = 3,072,602,638.84/57,553.80
  6. Step 6: Final answer
    x = 53,386.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.