Home / 81,534.56-122,108.51-64,613.16

Finding the Fourth Proportional to 81,534.56, 122,108.51 and 64,613.16

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Solution

The fourth proportional to 81,534.56, 122,108.51 and 64,613.16 is: 96,766.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,534.56 : 122,108.51 = 64,613.16 : x
  2. Step 2: Convert to fraction form
    81,534.56/122,108.51 = 64,613.16/x
  3. Step 3: Cross multiply
    81,534.56x = 122,108.51 × 64,613.16
  4. Step 4: Simplify right side
    81,534.56x = 7,889,816,370.93
  5. Step 5: Solve for x
    x = 7,889,816,370.93/81,534.56
  6. Step 6: Final answer
    x = 96,766.53

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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.