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Finding the Fourth Proportional to 65,723.78, 98,560.08 and 21,339.80

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Solution

The fourth proportional to 65,723.78, 98,560.08 and 21,339.80 is: 32,001.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,723.78 : 98,560.08 = 21,339.80 : x
  2. Step 2: Convert to fraction form
    65,723.78/98,560.08 = 21,339.80/x
  3. Step 3: Cross multiply
    65,723.78x = 98,560.08 × 21,339.80
  4. Step 4: Simplify right side
    65,723.78x = 2,103,252,395.18
  5. Step 5: Solve for x
    x = 2,103,252,395.18/65,723.78
  6. Step 6: Final answer
    x = 32,001.39

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1.5x scale

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.