Home / 89,689.38-123,743.40-50,920.86

Finding the Fourth Proportional to 89,689.38, 123,743.40 and 50,920.86

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Solution

The fourth proportional to 89,689.38, 123,743.40 and 50,920.86 is: 70,254.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,689.38 : 123,743.40 = 50,920.86 : x
  2. Step 2: Convert to fraction form
    89,689.38/123,743.40 = 50,920.86/x
  3. Step 3: Cross multiply
    89,689.38x = 123,743.40 × 50,920.86
  4. Step 4: Simplify right side
    89,689.38x = 6,301,120,347.32
  5. Step 5: Solve for x
    x = 6,301,120,347.32/89,689.38
  6. Step 6: Final answer
    x = 70,254.92

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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.