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Finding the Fourth Proportional to 73,060.80, 109,634.40 and 53,289.60

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Solution

The fourth proportional to 73,060.80, 109,634.40 and 53,289.60 is: 79,965.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,060.80 : 109,634.40 = 53,289.60 : x
  2. Step 2: Convert to fraction form
    73,060.80/109,634.40 = 53,289.60/x
  3. Step 3: Cross multiply
    73,060.80x = 109,634.40 × 53,289.60
  4. Step 4: Simplify right side
    73,060.80x = 5,842,373,322.24
  5. Step 5: Solve for x
    x = 5,842,373,322.24/73,060.80
  6. Step 6: Final answer
    x = 79,965.91

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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.