Home / 78,439.08-108,205.38-48,579.24

Finding the Fourth Proportional to 78,439.08, 108,205.38 and 48,579.24

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Solution

The fourth proportional to 78,439.08, 108,205.38 and 48,579.24 is: 67,014.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,439.08 : 108,205.38 = 48,579.24 : x
  2. Step 2: Convert to fraction form
    78,439.08/108,205.38 = 48,579.24/x
  3. Step 3: Cross multiply
    78,439.08x = 108,205.38 × 48,579.24
  4. Step 4: Simplify right side
    78,439.08x = 5,256,535,124.31
  5. Step 5: Solve for x
    x = 5,256,535,124.31/78,439.08
  6. Step 6: Final answer
    x = 67,014.24

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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.