Home / 71,817.47-99,108.09-39,993.87

Finding the Fourth Proportional to 71,817.47, 99,108.09 and 39,993.87

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Solution

The fourth proportional to 71,817.47, 99,108.09 and 39,993.87 is: 55,191.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,817.47 : 99,108.09 = 39,993.87 : x
  2. Step 2: Convert to fraction form
    71,817.47/99,108.09 = 39,993.87/x
  3. Step 3: Cross multiply
    71,817.47x = 99,108.09 × 39,993.87
  4. Step 4: Simplify right side
    71,817.47x = 3,963,716,067.41
  5. Step 5: Solve for x
    x = 3,963,716,067.41/71,817.47
  6. Step 6: Final answer
    x = 55,191.53

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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.