Home / 45,123.03-67,639.92-21,388.90

Finding the Fourth Proportional to 45,123.03, 67,639.92 and 21,388.90

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Solution

The fourth proportional to 45,123.03, 67,639.92 and 21,388.90 is: 32,062.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,123.03 : 67,639.92 = 21,388.90 : x
  2. Step 2: Convert to fraction form
    45,123.03/67,639.92 = 21,388.90/x
  3. Step 3: Cross multiply
    45,123.03x = 67,639.92 × 21,388.90
  4. Step 4: Simplify right side
    45,123.03x = 1,446,743,484.89
  5. Step 5: Solve for x
    x = 1,446,743,484.89/45,123.03
  6. Step 6: Final answer
    x = 32,062.20

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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.