Home / 87,809.32-121,186.98-50,089

Finding the Fourth Proportional to 87,809.32, 121,186.98 and 50,089

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Solution

The fourth proportional to 87,809.32, 121,186.98 and 50,089 is: 69,128.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,809.32 : 121,186.98 = 50,089 : x
  2. Step 2: Convert to fraction form
    87,809.32/121,186.98 = 50,089/x
  3. Step 3: Cross multiply
    87,809.32x = 121,186.98 × 50,089
  4. Step 4: Simplify right side
    87,809.32x = 6,070,134,641.22
  5. Step 5: Solve for x
    x = 6,070,134,641.22/87,809.32
  6. Step 6: Final answer
    x = 69,128.59

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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.