Home / 90,908.43-125,453.12-53,181.87

Finding the Fourth Proportional to 90,908.43, 125,453.12 and 53,181.87

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Solution

The fourth proportional to 90,908.43, 125,453.12 and 53,181.87 is: 73,390.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,908.43 : 125,453.12 = 53,181.87 : x
  2. Step 2: Convert to fraction form
    90,908.43/125,453.12 = 53,181.87/x
  3. Step 3: Cross multiply
    90,908.43x = 125,453.12 × 53,181.87
  4. Step 4: Simplify right side
    90,908.43x = 6,671,831,253.03
  5. Step 5: Solve for x
    x = 6,671,831,253.03/90,908.43
  6. Step 6: Final answer
    x = 73,390.68

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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.