Home / 71,824.10-99,116.28-39,992.99

Finding the Fourth Proportional to 71,824.10, 99,116.28 and 39,992.99

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Solution

The fourth proportional to 71,824.10, 99,116.28 and 39,992.99 is: 55,189.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,824.10 : 99,116.28 = 39,992.99 : x
  2. Step 2: Convert to fraction form
    71,824.10/99,116.28 = 39,992.99/x
  3. Step 3: Cross multiply
    71,824.10x = 99,116.28 × 39,992.99
  4. Step 4: Simplify right side
    71,824.10x = 3,963,955,899.30
  5. Step 5: Solve for x
    x = 3,963,955,899.30/71,824.10
  6. Step 6: Final answer
    x = 55,189.78

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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.