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Finding the Fourth Proportional to 65,515.80, 98,273.70 and 43,354.20

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Solution

The fourth proportional to 65,515.80, 98,273.70 and 43,354.20 is: 65,031.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,515.80 : 98,273.70 = 43,354.20 : x
  2. Step 2: Convert to fraction form
    65,515.80/98,273.70 = 43,354.20/x
  3. Step 3: Cross multiply
    65,515.80x = 98,273.70 × 43,354.20
  4. Step 4: Simplify right side
    65,515.80x = 4,260,577,644.54
  5. Step 5: Solve for x
    x = 4,260,577,644.54/65,515.80
  6. Step 6: Final answer
    x = 65,031.30

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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.