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Finding the Fourth Proportional to 81,573.36, 112,575.87 and 45,766.50

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Solution

The fourth proportional to 81,573.36, 112,575.87 and 45,766.50 is: 63,160.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,573.36 : 112,575.87 = 45,766.50 : x
  2. Step 2: Convert to fraction form
    81,573.36/112,575.87 = 45,766.50/x
  3. Step 3: Cross multiply
    81,573.36x = 112,575.87 × 45,766.50
  4. Step 4: Simplify right side
    81,573.36x = 5,152,203,554.36
  5. Step 5: Solve for x
    x = 5,152,203,554.36/81,573.36
  6. Step 6: Final answer
    x = 63,160.37

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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.