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Finding the Fourth Proportional to 72,695.40, 109,091.70 and 33,232.20

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Solution

The fourth proportional to 72,695.40, 109,091.70 and 33,232.20 is: 49,870.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,695.40 : 109,091.70 = 33,232.20 : x
  2. Step 2: Convert to fraction form
    72,695.40/109,091.70 = 33,232.20/x
  3. Step 3: Cross multiply
    72,695.40x = 109,091.70 × 33,232.20
  4. Step 4: Simplify right side
    72,695.40x = 3,625,357,192.74
  5. Step 5: Solve for x
    x = 3,625,357,192.74/72,695.40
  6. Step 6: Final answer
    x = 49,870.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.