Home / 72,082.02-108,122.78-19,491.50

Finding the Fourth Proportional to 72,082.02, 108,122.78 and 19,491.50

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Solution

The fourth proportional to 72,082.02, 108,122.78 and 19,491.50 is: 29,237.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,082.02 : 108,122.78 = 19,491.50 : x
  2. Step 2: Convert to fraction form
    72,082.02/108,122.78 = 19,491.50/x
  3. Step 3: Cross multiply
    72,082.02x = 108,122.78 × 19,491.50
  4. Step 4: Simplify right side
    72,082.02x = 2,107,475,166.37
  5. Step 5: Solve for x
    x = 2,107,475,166.37/72,082.02
  6. Step 6: Final answer
    x = 29,237.18

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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.