Home / 74,660.09-111,988.73-18,500.33

Finding the Fourth Proportional to 74,660.09, 111,988.73 and 18,500.33

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Solution

The fourth proportional to 74,660.09, 111,988.73 and 18,500.33 is: 27,750.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,660.09 : 111,988.73 = 18,500.33 : x
  2. Step 2: Convert to fraction form
    74,660.09/111,988.73 = 18,500.33/x
  3. Step 3: Cross multiply
    74,660.09x = 111,988.73 × 18,500.33
  4. Step 4: Simplify right side
    74,660.09x = 2,071,828,787.50
  5. Step 5: Solve for x
    x = 2,071,828,787.50/74,660.09
  6. Step 6: Final answer
    x = 27,750.15

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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.