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Finding the Fourth Proportional to 65,825.70, 98,746.80 and 21,440.52

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Solution

The fourth proportional to 65,825.70, 98,746.80 and 21,440.52 is: 32,163.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,825.70 : 98,746.80 = 21,440.52 : x
  2. Step 2: Convert to fraction form
    65,825.70/98,746.80 = 21,440.52/x
  3. Step 3: Cross multiply
    65,825.70x = 98,746.80 × 21,440.52
  4. Step 4: Simplify right side
    65,825.70x = 2,117,182,740.34
  5. Step 5: Solve for x
    x = 2,117,182,740.34/65,825.70
  6. Step 6: Final answer
    x = 32,163.47

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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.