Home / 71,840.57-99,136.05-40,003.79

Finding the Fourth Proportional to 71,840.57, 99,136.05 and 40,003.79

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Solution

The fourth proportional to 71,840.57, 99,136.05 and 40,003.79 is: 55,203.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,840.57 : 99,136.05 = 40,003.79 : x
  2. Step 2: Convert to fraction form
    71,840.57/99,136.05 = 40,003.79/x
  3. Step 3: Cross multiply
    71,840.57x = 99,136.05 × 40,003.79
  4. Step 4: Simplify right side
    71,840.57x = 3,965,817,725.63
  5. Step 5: Solve for x
    x = 3,965,817,725.63/71,840.57
  6. Step 6: Final answer
    x = 55,203.04

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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.