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Finding the Fourth Proportional to 81,200.67, 112,077.23 and 65,004.72

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Solution

The fourth proportional to 81,200.67, 112,077.23 and 65,004.72 is: 89,722.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,200.67 : 112,077.23 = 65,004.72 : x
  2. Step 2: Convert to fraction form
    81,200.67/112,077.23 = 65,004.72/x
  3. Step 3: Cross multiply
    81,200.67x = 112,077.23 × 65,004.72
  4. Step 4: Simplify right side
    81,200.67x = 7,285,548,954.53
  5. Step 5: Solve for x
    x = 7,285,548,954.53/81,200.67
  6. Step 6: Final answer
    x = 89,722.77

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1.5x scale

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.