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Finding the Fourth Proportional to 47,603.88, 71,372.88 and 20,937.06

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Solution

The fourth proportional to 47,603.88, 71,372.88 and 20,937.06 is: 31,391.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,603.88 : 71,372.88 = 20,937.06 : x
  2. Step 2: Convert to fraction form
    47,603.88/71,372.88 = 20,937.06/x
  3. Step 3: Cross multiply
    47,603.88x = 71,372.88 × 20,937.06
  4. Step 4: Simplify right side
    47,603.88x = 1,494,338,270.93
  5. Step 5: Solve for x
    x = 1,494,338,270.93/47,603.88
  6. Step 6: Final answer
    x = 31,391.10

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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.