Home / 89,779.19-123,889.59-49,490.74

Finding the Fourth Proportional to 89,779.19, 123,889.59 and 49,490.74

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Solution

The fourth proportional to 89,779.19, 123,889.59 and 49,490.74 is: 68,294.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,779.19 : 123,889.59 = 49,490.74 : x
  2. Step 2: Convert to fraction form
    89,779.19/123,889.59 = 49,490.74/x
  3. Step 3: Cross multiply
    89,779.19x = 123,889.59 × 49,490.74
  4. Step 4: Simplify right side
    89,779.19x = 6,131,387,177.67
  5. Step 5: Solve for x
    x = 6,131,387,177.67/89,779.19
  6. Step 6: Final answer
    x = 68,294.08

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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.