Home / 87,806.70-121,140.63-55,968.30

Finding the Fourth Proportional to 87,806.70, 121,140.63 and 55,968.30

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Solution

The fourth proportional to 87,806.70, 121,140.63 and 55,968.30 is: 77,215.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,806.70 : 121,140.63 = 55,968.30 : x
  2. Step 2: Convert to fraction form
    87,806.70/121,140.63 = 55,968.30/x
  3. Step 3: Cross multiply
    87,806.70x = 121,140.63 × 55,968.30
  4. Step 4: Simplify right side
    87,806.70x = 6,780,035,122.03
  5. Step 5: Solve for x
    x = 6,780,035,122.03/87,806.70
  6. Step 6: Final answer
    x = 77,215.46

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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.