Home / 87,246.72-120,416.04-51,434.64

Finding the Fourth Proportional to 87,246.72, 120,416.04 and 51,434.64

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Solution

The fourth proportional to 87,246.72, 120,416.04 and 51,434.64 is: 70,988.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,246.72 : 120,416.04 = 51,434.64 : x
  2. Step 2: Convert to fraction form
    87,246.72/120,416.04 = 51,434.64/x
  3. Step 3: Cross multiply
    87,246.72x = 120,416.04 × 51,434.64
  4. Step 4: Simplify right side
    87,246.72x = 6,193,555,667.63
  5. Step 5: Solve for x
    x = 6,193,555,667.63/87,246.72
  6. Step 6: Final answer
    x = 70,988.98

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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.