Home / 78,427.56-108,227.15-42,616.82

Finding the Fourth Proportional to 78,427.56, 108,227.15 and 42,616.82

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Solution

The fourth proportional to 78,427.56, 108,227.15 and 42,616.82 is: 58,809.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,427.56 : 108,227.15 = 42,616.82 : x
  2. Step 2: Convert to fraction form
    78,427.56/108,227.15 = 42,616.82/x
  3. Step 3: Cross multiply
    78,427.56x = 108,227.15 × 42,616.82
  4. Step 4: Simplify right side
    78,427.56x = 4,612,296,216.44
  5. Step 5: Solve for x
    x = 4,612,296,216.44/78,427.56
  6. Step 6: Final answer
    x = 58,809.64

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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.