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Finding the Fourth Proportional to 81,491.77, 112,459.03 and 45,683.29

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Solution

The fourth proportional to 81,491.77, 112,459.03 and 45,683.29 is: 63,043.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,491.77 : 112,459.03 = 45,683.29 : x
  2. Step 2: Convert to fraction form
    81,491.77/112,459.03 = 45,683.29/x
  3. Step 3: Cross multiply
    81,491.77x = 112,459.03 × 45,683.29
  4. Step 4: Simplify right side
    81,491.77x = 5,137,498,763.94
  5. Step 5: Solve for x
    x = 5,137,498,763.94/81,491.77
  6. Step 6: Final answer
    x = 63,043.16

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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.