Home / 87,434.78-120,668.74-53,458.52

Finding the Fourth Proportional to 87,434.78, 120,668.74 and 53,458.52

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Solution

The fourth proportional to 87,434.78, 120,668.74 and 53,458.52 is: 73,778.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,434.78 : 120,668.74 = 53,458.52 : x
  2. Step 2: Convert to fraction form
    87,434.78/120,668.74 = 53,458.52/x
  3. Step 3: Cross multiply
    87,434.78x = 120,668.74 × 53,458.52
  4. Step 4: Simplify right side
    87,434.78x = 6,450,771,513.67
  5. Step 5: Solve for x
    x = 6,450,771,513.67/87,434.78
  6. Step 6: Final answer
    x = 73,778.10

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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.