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Finding the Fourth Proportional to 65,684.44, 98,526.57 and 21,315.61

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Solution

The fourth proportional to 65,684.44, 98,526.57 and 21,315.61 is: 31,973.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,684.44 : 98,526.57 = 21,315.61 : x
  2. Step 2: Convert to fraction form
    65,684.44/98,526.57 = 21,315.61/x
  3. Step 3: Cross multiply
    65,684.44x = 98,526.57 × 21,315.61
  4. Step 4: Simplify right side
    65,684.44x = 2,100,153,940.76
  5. Step 5: Solve for x
    x = 2,100,153,940.76/65,684.44
  6. Step 6: Final answer
    x = 31,973.39

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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.