Home / 72,472.38-100,012.91-43,788.06

Finding the Fourth Proportional to 72,472.38, 100,012.91 and 43,788.06

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Solution

The fourth proportional to 72,472.38, 100,012.91 and 43,788.06 is: 60,428.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,472.38 : 100,012.91 = 43,788.06 : x
  2. Step 2: Convert to fraction form
    72,472.38/100,012.91 = 43,788.06/x
  3. Step 3: Cross multiply
    72,472.38x = 100,012.91 × 43,788.06
  4. Step 4: Simplify right side
    72,472.38x = 4,379,371,303.85
  5. Step 5: Solve for x
    x = 4,379,371,303.85/72,472.38
  6. Step 6: Final answer
    x = 60,428.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.