Home / 90,917.93-136,398.35-28,588.43

Finding the Fourth Proportional to 90,917.93, 136,398.35 and 28,588.43

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Solution

The fourth proportional to 90,917.93, 136,398.35 and 28,588.43 is: 42,889.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,917.93 : 136,398.35 = 28,588.43 : x
  2. Step 2: Convert to fraction form
    90,917.93/136,398.35 = 28,588.43/x
  3. Step 3: Cross multiply
    90,917.93x = 136,398.35 × 28,588.43
  4. Step 4: Simplify right side
    90,917.93x = 3,899,413,856.16
  5. Step 5: Solve for x
    x = 3,899,413,856.16/90,917.93
  6. Step 6: Final answer
    x = 42,889.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.