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Finding the Fourth Proportional to 73,803.52, 110,705.28 and 66,438.88

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Solution

The fourth proportional to 73,803.52, 110,705.28 and 66,438.88 is: 99,658.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,803.52 : 110,705.28 = 66,438.88 : x
  2. Step 2: Convert to fraction form
    73,803.52/110,705.28 = 66,438.88/x
  3. Step 3: Cross multiply
    73,803.52x = 110,705.28 × 66,438.88
  4. Step 4: Simplify right side
    73,803.52x = 7,355,134,813.29
  5. Step 5: Solve for x
    x = 7,355,134,813.29/73,803.52
  6. Step 6: Final answer
    x = 99,658.32

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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.