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Finding the Fourth Proportional to 80,663, 111,314.94 and 45,335

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Solution

The fourth proportional to 80,663, 111,314.94 and 45,335 is: 62,562.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,663 : 111,314.94 = 45,335 : x
  2. Step 2: Convert to fraction form
    80,663/111,314.94 = 45,335/x
  3. Step 3: Cross multiply
    80,663x = 111,314.94 × 45,335
  4. Step 4: Simplify right side
    80,663x = 5,046,462,804.90
  5. Step 5: Solve for x
    x = 5,046,462,804.90/80,663
  6. Step 6: Final answer
    x = 62,562.30

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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.