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Finding the Fourth Proportional to 81,674.76, 112,710.74 and 45,867.90

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Solution

The fourth proportional to 81,674.76, 112,710.74 and 45,867.90 is: 63,297.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,674.76 : 112,710.74 = 45,867.90 : x
  2. Step 2: Convert to fraction form
    81,674.76/112,710.74 = 45,867.90/x
  3. Step 3: Cross multiply
    81,674.76x = 112,710.74 × 45,867.90
  4. Step 4: Simplify right side
    81,674.76x = 5,169,804,721.91
  5. Step 5: Solve for x
    x = 5,169,804,721.91/81,674.76
  6. Step 6: Final answer
    x = 63,297.46

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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.