Home / 89,455.05-123,396.57-55,862.73

Finding the Fourth Proportional to 89,455.05, 123,396.57 and 55,862.73

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Solution

The fourth proportional to 89,455.05, 123,396.57 and 55,862.73 is: 77,058.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,455.05 : 123,396.57 = 55,862.73 : x
  2. Step 2: Convert to fraction form
    89,455.05/123,396.57 = 55,862.73/x
  3. Step 3: Cross multiply
    89,455.05x = 123,396.57 × 55,862.73
  4. Step 4: Simplify right side
    89,455.05x = 6,893,269,272.84
  5. Step 5: Solve for x
    x = 6,893,269,272.84/89,455.05
  6. Step 6: Final answer
    x = 77,058.47

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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.