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Finding the Fourth Proportional to 65,711.60, 98,556.60 and 18,329.93

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Solution

The fourth proportional to 65,711.60, 98,556.60 and 18,329.93 is: 27,491.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,711.60 : 98,556.60 = 18,329.93 : x
  2. Step 2: Convert to fraction form
    65,711.60/98,556.60 = 18,329.93/x
  3. Step 3: Cross multiply
    65,711.60x = 98,556.60 × 18,329.93
  4. Step 4: Simplify right side
    65,711.60x = 1,806,535,579.04
  5. Step 5: Solve for x
    x = 1,806,535,579.04/65,711.60
  6. Step 6: Final answer
    x = 27,491.88

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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.