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Finding the Fourth Proportional to 77,551.76, 116,335.73 and 21,391.88

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Solution

The fourth proportional to 77,551.76, 116,335.73 and 21,391.88 is: 32,090.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,551.76 : 116,335.73 = 21,391.88 : x
  2. Step 2: Convert to fraction form
    77,551.76/116,335.73 = 21,391.88/x
  3. Step 3: Cross multiply
    77,551.76x = 116,335.73 × 21,391.88
  4. Step 4: Simplify right side
    77,551.76x = 2,488,639,287.23
  5. Step 5: Solve for x
    x = 2,488,639,287.23/77,551.76
  6. Step 6: Final answer
    x = 32,090.04

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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.