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Finding the Fourth Proportional to 47,908.74, 66,116.08 and 26,688

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Solution

The fourth proportional to 47,908.74, 66,116.08 and 26,688 is: 36,830.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,908.74 : 66,116.08 = 26,688 : x
  2. Step 2: Convert to fraction form
    47,908.74/66,116.08 = 26,688/x
  3. Step 3: Cross multiply
    47,908.74x = 66,116.08 × 26,688
  4. Step 4: Simplify right side
    47,908.74x = 1,764,505,943.04
  5. Step 5: Solve for x
    x = 1,764,505,943.04/47,908.74
  6. Step 6: Final answer
    x = 36,830.56

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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.