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Finding the Fourth Proportional to 47,191.28, 70,737.70 and 19,130.70

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Solution

The fourth proportional to 47,191.28, 70,737.70 and 19,130.70 is: 28,676.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,191.28 : 70,737.70 = 19,130.70 : x
  2. Step 2: Convert to fraction form
    47,191.28/70,737.70 = 19,130.70/x
  3. Step 3: Cross multiply
    47,191.28x = 70,737.70 × 19,130.70
  4. Step 4: Simplify right side
    47,191.28x = 1,353,261,717.39
  5. Step 5: Solve for x
    x = 1,353,261,717.39/47,191.28
  6. Step 6: Final answer
    x = 28,676.10

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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.