Home / 78,439.14-108,216.54-48,200.22

Finding the Fourth Proportional to 78,439.14, 108,216.54 and 48,200.22

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Solution

The fourth proportional to 78,439.14, 108,216.54 and 48,200.22 is: 66,498.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,439.14 : 108,216.54 = 48,200.22 : x
  2. Step 2: Convert to fraction form
    78,439.14/108,216.54 = 48,200.22/x
  3. Step 3: Cross multiply
    78,439.14x = 108,216.54 × 48,200.22
  4. Step 4: Simplify right side
    78,439.14x = 5,216,061,035.64
  5. Step 5: Solve for x
    x = 5,216,061,035.64/78,439.14
  6. Step 6: Final answer
    x = 66,498.19

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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.