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Finding the Fourth Proportional to 99,042, 136,617.48 and 65,054.40

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Solution

The fourth proportional to 99,042, 136,617.48 and 65,054.40 is: 89,735.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,042 : 136,617.48 = 65,054.40 : x
  2. Step 2: Convert to fraction form
    99,042/136,617.48 = 65,054.40/x
  3. Step 3: Cross multiply
    99,042x = 136,617.48 × 65,054.40
  4. Step 4: Simplify right side
    99,042x = 8,887,568,190.91
  5. Step 5: Solve for x
    x = 8,887,568,190.91/99,042
  6. Step 6: Final answer
    x = 89,735.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.