Home / 89,308.80-123,187.20-57,427.20

Finding the Fourth Proportional to 89,308.80, 123,187.20 and 57,427.20

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Solution

The fourth proportional to 89,308.80, 123,187.20 and 57,427.20 is: 79,211.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,308.80 : 123,187.20 = 57,427.20 : x
  2. Step 2: Convert to fraction form
    89,308.80/123,187.20 = 57,427.20/x
  3. Step 3: Cross multiply
    89,308.80x = 123,187.20 × 57,427.20
  4. Step 4: Simplify right side
    89,308.80x = 7,074,295,971.84
  5. Step 5: Solve for x
    x = 7,074,295,971.84/89,308.80
  6. Step 6: Final answer
    x = 79,211.63

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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.