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Finding the Fourth Proportional to 80,483, 111,066.54 and 52,188.90

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Solution

The fourth proportional to 80,483, 111,066.54 and 52,188.90 is: 72,020.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,483 : 111,066.54 = 52,188.90 : x
  2. Step 2: Convert to fraction form
    80,483/111,066.54 = 52,188.90/x
  3. Step 3: Cross multiply
    80,483x = 111,066.54 × 52,188.90
  4. Step 4: Simplify right side
    80,483x = 5,796,440,549.41
  5. Step 5: Solve for x
    x = 5,796,440,549.41/80,483
  6. Step 6: Final answer
    x = 72,020.68

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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.