Home / 74,228.32-111,320.70-20,916.75

Finding the Fourth Proportional to 74,228.32, 111,320.70 and 20,916.75

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Solution

The fourth proportional to 74,228.32, 111,320.70 and 20,916.75 is: 31,368.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,228.32 : 111,320.70 = 20,916.75 : x
  2. Step 2: Convert to fraction form
    74,228.32/111,320.70 = 20,916.75/x
  3. Step 3: Cross multiply
    74,228.32x = 111,320.70 × 20,916.75
  4. Step 4: Simplify right side
    74,228.32x = 2,328,467,251.73
  5. Step 5: Solve for x
    x = 2,328,467,251.73/74,228.32
  6. Step 6: Final answer
    x = 31,368.99

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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.