Home / 78,715.62-108,624.36-42,904.86

Finding the Fourth Proportional to 78,715.62, 108,624.36 and 42,904.86

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Solution

The fourth proportional to 78,715.62, 108,624.36 and 42,904.86 is: 59,206.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,715.62 : 108,624.36 = 42,904.86 : x
  2. Step 2: Convert to fraction form
    78,715.62/108,624.36 = 42,904.86/x
  3. Step 3: Cross multiply
    78,715.62x = 108,624.36 × 42,904.86
  4. Step 4: Simplify right side
    78,715.62x = 4,660,512,958.39
  5. Step 5: Solve for x
    x = 4,660,512,958.39/78,715.62
  6. Step 6: Final answer
    x = 59,206.97

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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.