Home / 74,219.30-111,320.06-20,915.27

Finding the Fourth Proportional to 74,219.30, 111,320.06 and 20,915.27

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Solution

The fourth proportional to 74,219.30, 111,320.06 and 20,915.27 is: 31,370.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,219.30 : 111,320.06 = 20,915.27 : x
  2. Step 2: Convert to fraction form
    74,219.30/111,320.06 = 20,915.27/x
  3. Step 3: Cross multiply
    74,219.30x = 111,320.06 × 20,915.27
  4. Step 4: Simplify right side
    74,219.30x = 2,328,289,268.91
  5. Step 5: Solve for x
    x = 2,328,289,268.91/74,219.30
  6. Step 6: Final answer
    x = 31,370.40

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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.