Home / 79,718.15-119,355.79-40,155.32

Finding the Fourth Proportional to 79,718.15, 119,355.79 and 40,155.32

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Solution

The fourth proportional to 79,718.15, 119,355.79 and 40,155.32 is: 60,121.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,718.15 : 119,355.79 = 40,155.32 : x
  2. Step 2: Convert to fraction form
    79,718.15/119,355.79 = 40,155.32/x
  3. Step 3: Cross multiply
    79,718.15x = 119,355.79 × 40,155.32
  4. Step 4: Simplify right side
    79,718.15x = 4,792,769,941.30
  5. Step 5: Solve for x
    x = 4,792,769,941.30/79,718.15
  6. Step 6: Final answer
    x = 60,121.44

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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.