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Finding the Fourth Proportional to 70,384.97, 105,515.57 and 36,579.81

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Solution

The fourth proportional to 70,384.97, 105,515.57 and 36,579.81 is: 54,837.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,384.97 : 105,515.57 = 36,579.81 : x
  2. Step 2: Convert to fraction form
    70,384.97/105,515.57 = 36,579.81/x
  3. Step 3: Cross multiply
    70,384.97x = 105,515.57 × 36,579.81
  4. Step 4: Simplify right side
    70,384.97x = 3,859,739,502.64
  5. Step 5: Solve for x
    x = 3,859,739,502.64/70,384.97
  6. Step 6: Final answer
    x = 54,837.55

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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.