Home / 79,949.19-119,938.41-39,989.10

Finding the Fourth Proportional to 79,949.19, 119,938.41 and 39,989.10

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Solution

The fourth proportional to 79,949.19, 119,938.41 and 39,989.10 is: 59,990.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,949.19 : 119,938.41 = 39,989.10 : x
  2. Step 2: Convert to fraction form
    79,949.19/119,938.41 = 39,989.10/x
  3. Step 3: Cross multiply
    79,949.19x = 119,938.41 × 39,989.10
  4. Step 4: Simplify right side
    79,949.19x = 4,796,229,071.33
  5. Step 5: Solve for x
    x = 4,796,229,071.33/79,949.19
  6. Step 6: Final answer
    x = 59,990.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.