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Finding the Fourth Proportional to 65,937.60, 98,906.40 and 21,553.65

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Solution

The fourth proportional to 65,937.60, 98,906.40 and 21,553.65 is: 32,330.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,937.60 : 98,906.40 = 21,553.65 : x
  2. Step 2: Convert to fraction form
    65,937.60/98,906.40 = 21,553.65/x
  3. Step 3: Cross multiply
    65,937.60x = 98,906.40 × 21,553.65
  4. Step 4: Simplify right side
    65,937.60x = 2,131,793,928.36
  5. Step 5: Solve for x
    x = 2,131,793,928.36/65,937.60
  6. Step 6: Final answer
    x = 32,330.48

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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.