Home / 72,671.20-109,006.80-46,297.60

Finding the Fourth Proportional to 72,671.20, 109,006.80 and 46,297.60

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Solution

The fourth proportional to 72,671.20, 109,006.80 and 46,297.60 is: 69,446.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,671.20 : 109,006.80 = 46,297.60 : x
  2. Step 2: Convert to fraction form
    72,671.20/109,006.80 = 46,297.60/x
  3. Step 3: Cross multiply
    72,671.20x = 109,006.80 × 46,297.60
  4. Step 4: Simplify right side
    72,671.20x = 5,046,753,223.68
  5. Step 5: Solve for x
    x = 5,046,753,223.68/72,671.20
  6. Step 6: Final answer
    x = 69,446.40

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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.