Home / 87,291.19-120,458.64-53,356.51

Finding the Fourth Proportional to 87,291.19, 120,458.64 and 53,356.51

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Solution

The fourth proportional to 87,291.19, 120,458.64 and 53,356.51 is: 73,630.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,291.19 : 120,458.64 = 53,356.51 : x
  2. Step 2: Convert to fraction form
    87,291.19/120,458.64 = 53,356.51/x
  3. Step 3: Cross multiply
    87,291.19x = 120,458.64 × 53,356.51
  4. Step 4: Simplify right side
    87,291.19x = 6,427,252,629.75
  5. Step 5: Solve for x
    x = 6,427,252,629.75/87,291.19
  6. Step 6: Final answer
    x = 73,630.03

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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.