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Finding the Fourth Proportional to 62,871.39, 94,318.74 and 20,754.40

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Solution

The fourth proportional to 62,871.39, 94,318.74 and 20,754.40 is: 31,135.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,871.39 : 94,318.74 = 20,754.40 : x
  2. Step 2: Convert to fraction form
    62,871.39/94,318.74 = 20,754.40/x
  3. Step 3: Cross multiply
    62,871.39x = 94,318.74 × 20,754.40
  4. Step 4: Simplify right side
    62,871.39x = 1,957,528,857.46
  5. Step 5: Solve for x
    x = 1,957,528,857.46/62,871.39
  6. Step 6: Final answer
    x = 31,135.45

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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.