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Finding the Fourth Proportional to 34,776.81, 52,119.86 and 13,988.97

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Solution

The fourth proportional to 34,776.81, 52,119.86 and 13,988.97 is: 20,965.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,776.81 : 52,119.86 = 13,988.97 : x
  2. Step 2: Convert to fraction form
    34,776.81/52,119.86 = 13,988.97/x
  3. Step 3: Cross multiply
    34,776.81x = 52,119.86 × 13,988.97
  4. Step 4: Simplify right side
    34,776.81x = 729,103,088.00
  5. Step 5: Solve for x
    x = 729,103,088.00/34,776.81
  6. Step 6: Final answer
    x = 20,965.21

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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.