Home / 87,870.31-121,261.09-47,584.11

Finding the Fourth Proportional to 87,870.31, 121,261.09 and 47,584.11

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Solution

The fourth proportional to 87,870.31, 121,261.09 and 47,584.11 is: 65,666.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,870.31 : 121,261.09 = 47,584.11 : x
  2. Step 2: Convert to fraction form
    87,870.31/121,261.09 = 47,584.11/x
  3. Step 3: Cross multiply
    87,870.31x = 121,261.09 × 47,584.11
  4. Step 4: Simplify right side
    87,870.31x = 5,770,101,153.68
  5. Step 5: Solve for x
    x = 5,770,101,153.68/87,870.31
  6. Step 6: Final answer
    x = 65,666.11

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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.