Home / 87,870.49-121,261.35-47,584.30

Finding the Fourth Proportional to 87,870.49, 121,261.35 and 47,584.30

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Solution

The fourth proportional to 87,870.49, 121,261.35 and 47,584.30 is: 65,666.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,870.49 : 121,261.35 = 47,584.30 : x
  2. Step 2: Convert to fraction form
    87,870.49/121,261.35 = 47,584.30/x
  3. Step 3: Cross multiply
    87,870.49x = 121,261.35 × 47,584.30
  4. Step 4: Simplify right side
    87,870.49x = 5,770,136,202.58
  5. Step 5: Solve for x
    x = 5,770,136,202.58/87,870.49
  6. Step 6: Final answer
    x = 65,666.37

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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.