Home / 89,835.83-123,979.11-51,607.34

Finding the Fourth Proportional to 89,835.83, 123,979.11 and 51,607.34

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Solution

The fourth proportional to 89,835.83, 123,979.11 and 51,607.34 is: 71,221.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,835.83 : 123,979.11 = 51,607.34 : x
  2. Step 2: Convert to fraction form
    89,835.83/123,979.11 = 51,607.34/x
  3. Step 3: Cross multiply
    89,835.83x = 123,979.11 × 51,607.34
  4. Step 4: Simplify right side
    89,835.83x = 6,398,232,082.67
  5. Step 5: Solve for x
    x = 6,398,232,082.67/89,835.83
  6. Step 6: Final answer
    x = 71,221.38

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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.