Home / 87,587.75-120,871.09-47,301.51

Finding the Fourth Proportional to 87,587.75, 120,871.09 and 47,301.51

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Solution

The fourth proportional to 87,587.75, 120,871.09 and 47,301.51 is: 65,276.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,587.75 : 120,871.09 = 47,301.51 : x
  2. Step 2: Convert to fraction form
    87,587.75/120,871.09 = 47,301.51/x
  3. Step 3: Cross multiply
    87,587.75x = 120,871.09 × 47,301.51
  4. Step 4: Simplify right side
    87,587.75x = 5,717,385,072.35
  5. Step 5: Solve for x
    x = 5,717,385,072.35/87,587.75
  6. Step 6: Final answer
    x = 65,276.08

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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.