Home / 87,622.08-120,918.78-53,155.36

Finding the Fourth Proportional to 87,622.08, 120,918.78 and 53,155.36

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Solution

The fourth proportional to 87,622.08, 120,918.78 and 53,155.36 is: 73,354.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,622.08 : 120,918.78 = 53,155.36 : x
  2. Step 2: Convert to fraction form
    87,622.08/120,918.78 = 53,155.36/x
  3. Step 3: Cross multiply
    87,622.08x = 120,918.78 × 53,155.36
  4. Step 4: Simplify right side
    87,622.08x = 6,427,481,281.66
  5. Step 5: Solve for x
    x = 6,427,481,281.66/87,622.08
  6. Step 6: Final answer
    x = 73,354.58

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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.