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Finding the Fourth Proportional to 81,605.96, 112,617.06 and 45,308

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Solution

The fourth proportional to 81,605.96, 112,617.06 and 45,308 is: 62,525.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,605.96 : 112,617.06 = 45,308 : x
  2. Step 2: Convert to fraction form
    81,605.96/112,617.06 = 45,308/x
  3. Step 3: Cross multiply
    81,605.96x = 112,617.06 × 45,308
  4. Step 4: Simplify right side
    81,605.96x = 5,102,453,754.48
  5. Step 5: Solve for x
    x = 5,102,453,754.48/81,605.96
  6. Step 6: Final answer
    x = 62,525.50

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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.