Home / 71,907.25-99,235.39-40,076.38

Finding the Fourth Proportional to 71,907.25, 99,235.39 and 40,076.38

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Solution

The fourth proportional to 71,907.25, 99,235.39 and 40,076.38 is: 55,307.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,907.25 : 99,235.39 = 40,076.38 : x
  2. Step 2: Convert to fraction form
    71,907.25/99,235.39 = 40,076.38/x
  3. Step 3: Cross multiply
    71,907.25x = 99,235.39 × 40,076.38
  4. Step 4: Simplify right side
    71,907.25x = 3,976,994,750.62
  5. Step 5: Solve for x
    x = 3,976,994,750.62/71,907.25
  6. Step 6: Final answer
    x = 55,307.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.