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Finding the Fourth Proportional to 48,710.20, 72,911.70 and 47,174.20

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Solution

The fourth proportional to 48,710.20, 72,911.70 and 47,174.20 is: 70,612.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,710.20 : 72,911.70 = 47,174.20 : x
  2. Step 2: Convert to fraction form
    48,710.20/72,911.70 = 47,174.20/x
  3. Step 3: Cross multiply
    48,710.20x = 72,911.70 × 47,174.20
  4. Step 4: Simplify right side
    48,710.20x = 3,439,551,118.14
  5. Step 5: Solve for x
    x = 3,439,551,118.14/48,710.20
  6. Step 6: Final answer
    x = 70,612.54

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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.