Home / 76,409.76-114,639.55-38,439.44

Finding the Fourth Proportional to 76,409.76, 114,639.55 and 38,439.44

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Solution

The fourth proportional to 76,409.76, 114,639.55 and 38,439.44 is: 57,671.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,409.76 : 114,639.55 = 38,439.44 : x
  2. Step 2: Convert to fraction form
    76,409.76/114,639.55 = 38,439.44/x
  3. Step 3: Cross multiply
    76,409.76x = 114,639.55 × 38,439.44
  4. Step 4: Simplify right side
    76,409.76x = 4,406,680,103.85
  5. Step 5: Solve for x
    x = 4,406,680,103.85/76,409.76
  6. Step 6: Final answer
    x = 57,671.69

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1.5x scale

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.