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Finding the Fourth Proportional to 47,351.16, 70,976.80 and 15,752.78

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Solution

The fourth proportional to 47,351.16, 70,976.80 and 15,752.78 is: 23,612.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,351.16 : 70,976.80 = 15,752.78 : x
  2. Step 2: Convert to fraction form
    47,351.16/70,976.80 = 15,752.78/x
  3. Step 3: Cross multiply
    47,351.16x = 70,976.80 × 15,752.78
  4. Step 4: Simplify right side
    47,351.16x = 1,118,081,600.00
  5. Step 5: Solve for x
    x = 1,118,081,600.00/47,351.16
  6. Step 6: Final answer
    x = 23,612.55

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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.