Home / 71,790.62-99,074.32-39,961.58

Finding the Fourth Proportional to 71,790.62, 99,074.32 and 39,961.58

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Solution

The fourth proportional to 71,790.62, 99,074.32 and 39,961.58 is: 55,148.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,790.62 : 99,074.32 = 39,961.58 : x
  2. Step 2: Convert to fraction form
    71,790.62/99,074.32 = 39,961.58/x
  3. Step 3: Cross multiply
    71,790.62x = 99,074.32 × 39,961.58
  4. Step 4: Simplify right side
    71,790.62x = 3,959,166,364.63
  5. Step 5: Solve for x
    x = 3,959,166,364.63/71,790.62
  6. Step 6: Final answer
    x = 55,148.80

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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.