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Finding the Fourth Proportional to 81,395.70, 112,320.72 and 45,577.50

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Solution

The fourth proportional to 81,395.70, 112,320.72 and 45,577.50 is: 62,893.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,395.70 : 112,320.72 = 45,577.50 : x
  2. Step 2: Convert to fraction form
    81,395.70/112,320.72 = 45,577.50/x
  3. Step 3: Cross multiply
    81,395.70x = 112,320.72 × 45,577.50
  4. Step 4: Simplify right side
    81,395.70x = 5,119,297,615.80
  5. Step 5: Solve for x
    x = 5,119,297,615.80/81,395.70
  6. Step 6: Final answer
    x = 62,893.96

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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.