Home / 71,858.97-99,165.47-39,153.21

Finding the Fourth Proportional to 71,858.97, 99,165.47 and 39,153.21

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Solution

The fourth proportional to 71,858.97, 99,165.47 and 39,153.21 is: 54,031.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,858.97 : 99,165.47 = 39,153.21 : x
  2. Step 2: Convert to fraction form
    71,858.97/99,165.47 = 39,153.21/x
  3. Step 3: Cross multiply
    71,858.97x = 99,165.47 × 39,153.21
  4. Step 4: Simplify right side
    71,858.97x = 3,882,645,780.07
  5. Step 5: Solve for x
    x = 3,882,645,780.07/71,858.97
  6. Step 6: Final answer
    x = 54,031.47

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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.