Home / 89,779.16-123,889.68-49,490.84

Finding the Fourth Proportional to 89,779.16, 123,889.68 and 49,490.84

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Solution

The fourth proportional to 89,779.16, 123,889.68 and 49,490.84 is: 68,294.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,779.16 : 123,889.68 = 49,490.84 : x
  2. Step 2: Convert to fraction form
    89,779.16/123,889.68 = 49,490.84/x
  3. Step 3: Cross multiply
    89,779.16x = 123,889.68 × 49,490.84
  4. Step 4: Simplify right side
    89,779.16x = 6,131,403,711.08
  5. Step 5: Solve for x
    x = 6,131,403,711.08/89,779.16
  6. Step 6: Final answer
    x = 68,294.29

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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.