Home / 80,983.02-111,756.60-45,172.92

Finding the Fourth Proportional to 80,983.02, 111,756.60 and 45,172.92

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Solution

The fourth proportional to 80,983.02, 111,756.60 and 45,172.92 is: 62,338.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,983.02 : 111,756.60 = 45,172.92 : x
  2. Step 2: Convert to fraction form
    80,983.02/111,756.60 = 45,172.92/x
  3. Step 3: Cross multiply
    80,983.02x = 111,756.60 × 45,172.92
  4. Step 4: Simplify right side
    80,983.02x = 5,048,371,951.27
  5. Step 5: Solve for x
    x = 5,048,371,951.27/80,983.02
  6. Step 6: Final answer
    x = 62,338.65

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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.