Home / 87,840.74-121,220.60-47,554.50

Finding the Fourth Proportional to 87,840.74, 121,220.60 and 47,554.50

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Solution

The fourth proportional to 87,840.74, 121,220.60 and 47,554.50 is: 65,625.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,840.74 : 121,220.60 = 47,554.50 : x
  2. Step 2: Convert to fraction form
    87,840.74/121,220.60 = 47,554.50/x
  3. Step 3: Cross multiply
    87,840.74x = 121,220.60 × 47,554.50
  4. Step 4: Simplify right side
    87,840.74x = 5,764,584,784.93
  5. Step 5: Solve for x
    x = 5,764,584,784.93/87,840.74
  6. Step 6: Final answer
    x = 65,625.42

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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.