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Finding the Fourth Proportional to 65,714.20, 98,619.90 and 43,520.20

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Solution

The fourth proportional to 65,714.20, 98,619.90 and 43,520.20 is: 65,312.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,714.20 : 98,619.90 = 43,520.20 : x
  2. Step 2: Convert to fraction form
    65,714.20/98,619.90 = 43,520.20/x
  3. Step 3: Cross multiply
    65,714.20x = 98,619.90 × 43,520.20
  4. Step 4: Simplify right side
    65,714.20x = 4,291,957,771.98
  5. Step 5: Solve for x
    x = 4,291,957,771.98/65,714.20
  6. Step 6: Final answer
    x = 65,312.49

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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.