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Finding the Fourth Proportional to 47,157.87, 70,721.79 and 15,562.05

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Solution

The fourth proportional to 47,157.87, 70,721.79 and 15,562.05 is: 23,338.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,157.87 : 70,721.79 = 15,562.05 : x
  2. Step 2: Convert to fraction form
    47,157.87/70,721.79 = 15,562.05/x
  3. Step 3: Cross multiply
    47,157.87x = 70,721.79 × 15,562.05
  4. Step 4: Simplify right side
    47,157.87x = 1,100,576,032.07
  5. Step 5: Solve for x
    x = 1,100,576,032.07/47,157.87
  6. Step 6: Final answer
    x = 23,338.12

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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.