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Finding the Fourth Proportional to 47,776.70, 65,926.44 and 27,639.90

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Solution

The fourth proportional to 47,776.70, 65,926.44 and 27,639.90 is: 38,139.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,776.70 : 65,926.44 = 27,639.90 : x
  2. Step 2: Convert to fraction form
    47,776.70/65,926.44 = 27,639.90/x
  3. Step 3: Cross multiply
    47,776.70x = 65,926.44 × 27,639.90
  4. Step 4: Simplify right side
    47,776.70x = 1,822,200,208.96
  5. Step 5: Solve for x
    x = 1,822,200,208.96/47,776.70
  6. Step 6: Final answer
    x = 38,139.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.