Home / 71,815.80-107,703.64-42,945.56

Finding the Fourth Proportional to 71,815.80, 107,703.64 and 42,945.56

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Solution

The fourth proportional to 71,815.80, 107,703.64 and 42,945.56 is: 64,406.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,815.80 : 107,703.64 = 42,945.56 : x
  2. Step 2: Convert to fraction form
    71,815.80/107,703.64 = 42,945.56/x
  3. Step 3: Cross multiply
    71,815.80x = 107,703.64 × 42,945.56
  4. Step 4: Simplify right side
    71,815.80x = 4,625,393,133.84
  5. Step 5: Solve for x
    x = 4,625,393,133.84/71,815.80
  6. Step 6: Final answer
    x = 64,406.34

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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.