Home / 71,799.85-99,081.12-39,968.07

Finding the Fourth Proportional to 71,799.85, 99,081.12 and 39,968.07

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Solution

The fourth proportional to 71,799.85, 99,081.12 and 39,968.07 is: 55,154.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,799.85 : 99,081.12 = 39,968.07 : x
  2. Step 2: Convert to fraction form
    71,799.85/99,081.12 = 39,968.07/x
  3. Step 3: Cross multiply
    71,799.85x = 99,081.12 × 39,968.07
  4. Step 4: Simplify right side
    71,799.85x = 3,960,081,139.84
  5. Step 5: Solve for x
    x = 3,960,081,139.84/71,799.85
  6. Step 6: Final answer
    x = 55,154.45

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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.