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Finding the Fourth Proportional to 86,522, 119,292.18 and 72,202.46

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Solution

The fourth proportional to 86,522, 119,292.18 and 72,202.46 is: 99,549.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,522 : 119,292.18 = 72,202.46 : x
  2. Step 2: Convert to fraction form
    86,522/119,292.18 = 72,202.46/x
  3. Step 3: Cross multiply
    86,522x = 119,292.18 × 72,202.46
  4. Step 4: Simplify right side
    86,522x = 8,613,188,854.76
  5. Step 5: Solve for x
    x = 8,613,188,854.76/86,522
  6. Step 6: Final answer
    x = 99,549.12

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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.