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Finding the Fourth Proportional to 70,933.64, 106,328.66 and 45,989.54

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Solution

The fourth proportional to 70,933.64, 106,328.66 and 45,989.54 is: 68,937.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,933.64 : 106,328.66 = 45,989.54 : x
  2. Step 2: Convert to fraction form
    70,933.64/106,328.66 = 45,989.54/x
  3. Step 3: Cross multiply
    70,933.64x = 106,328.66 × 45,989.54
  4. Step 4: Simplify right side
    70,933.64x = 4,890,005,400.63
  5. Step 5: Solve for x
    x = 4,890,005,400.63/70,933.64
  6. Step 6: Final answer
    x = 68,937.75

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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.