Home / 87,203.84-120,364.31-51,417.69

Finding the Fourth Proportional to 87,203.84, 120,364.31 and 51,417.69

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Solution

The fourth proportional to 87,203.84, 120,364.31 and 51,417.69 is: 70,969.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,203.84 : 120,364.31 = 51,417.69 : x
  2. Step 2: Convert to fraction form
    87,203.84/120,364.31 = 51,417.69/x
  3. Step 3: Cross multiply
    87,203.84x = 120,364.31 × 51,417.69
  4. Step 4: Simplify right side
    87,203.84x = 6,188,854,778.64
  5. Step 5: Solve for x
    x = 6,188,854,778.64/87,203.84
  6. Step 6: Final answer
    x = 70,969.98

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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.