Home / 78,438.08-108,204-48,578.24

Finding the Fourth Proportional to 78,438.08, 108,204 and 48,578.24

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Solution

The fourth proportional to 78,438.08, 108,204 and 48,578.24 is: 67,012.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,438.08 : 108,204 = 48,578.24 : x
  2. Step 2: Convert to fraction form
    78,438.08/108,204 = 48,578.24/x
  3. Step 3: Cross multiply
    78,438.08x = 108,204 × 48,578.24
  4. Step 4: Simplify right side
    78,438.08x = 5,256,359,880.96
  5. Step 5: Solve for x
    x = 5,256,359,880.96/78,438.08
  6. Step 6: Final answer
    x = 67,012.86

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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.