Home / 78,455.40-108,293.22-50,161.20

Finding the Fourth Proportional to 78,455.40, 108,293.22 and 50,161.20

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Solution

The fourth proportional to 78,455.40, 108,293.22 and 50,161.20 is: 69,238.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,455.40 : 108,293.22 = 50,161.20 : x
  2. Step 2: Convert to fraction form
    78,455.40/108,293.22 = 50,161.20/x
  3. Step 3: Cross multiply
    78,455.40x = 108,293.22 × 50,161.20
  4. Step 4: Simplify right side
    78,455.40x = 5,432,117,867.06
  5. Step 5: Solve for x
    x = 5,432,117,867.06/78,455.40
  6. Step 6: Final answer
    x = 69,238.29

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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.