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Finding the Fourth Proportional to 70,662.76, 105,763.38 and 51,937.84

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Solution

The fourth proportional to 70,662.76, 105,763.38 and 51,937.84 is: 77,737.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,662.76 : 105,763.38 = 51,937.84 : x
  2. Step 2: Convert to fraction form
    70,662.76/105,763.38 = 51,937.84/x
  3. Step 3: Cross multiply
    70,662.76x = 105,763.38 × 51,937.84
  4. Step 4: Simplify right side
    70,662.76x = 5,493,121,508.30
  5. Step 5: Solve for x
    x = 5,493,121,508.30/70,662.76
  6. Step 6: Final answer
    x = 77,737.15

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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.