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Finding the Fourth Proportional to 73,053.60, 109,504.80 and 39,703.20

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Solution

The fourth proportional to 73,053.60, 109,504.80 and 39,703.20 is: 59,513.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,053.60 : 109,504.80 = 39,703.20 : x
  2. Step 2: Convert to fraction form
    73,053.60/109,504.80 = 39,703.20/x
  3. Step 3: Cross multiply
    73,053.60x = 109,504.80 × 39,703.20
  4. Step 4: Simplify right side
    73,053.60x = 4,347,690,975.36
  5. Step 5: Solve for x
    x = 4,347,690,975.36/73,053.60
  6. Step 6: Final answer
    x = 59,513.71

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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.