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Finding the Fourth Proportional to 47,132.88, 70,697.70 and 12,072.84

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Solution

The fourth proportional to 47,132.88, 70,697.70 and 12,072.84 is: 18,108.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,132.88 : 70,697.70 = 12,072.84 : x
  2. Step 2: Convert to fraction form
    47,132.88/70,697.70 = 12,072.84/x
  3. Step 3: Cross multiply
    47,132.88x = 70,697.70 × 12,072.84
  4. Step 4: Simplify right side
    47,132.88x = 853,522,020.47
  5. Step 5: Solve for x
    x = 853,522,020.47/47,132.88
  6. Step 6: Final answer
    x = 18,108.85

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.