Home / 90,568.22-124,902.20-56,579.80

Finding the Fourth Proportional to 90,568.22, 124,902.20 and 56,579.80

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Solution

The fourth proportional to 90,568.22, 124,902.20 and 56,579.80 is: 78,028.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,568.22 : 124,902.20 = 56,579.80 : x
  2. Step 2: Convert to fraction form
    90,568.22/124,902.20 = 56,579.80/x
  3. Step 3: Cross multiply
    90,568.22x = 124,902.20 × 56,579.80
  4. Step 4: Simplify right side
    90,568.22x = 7,066,941,495.56
  5. Step 5: Solve for x
    x = 7,066,941,495.56/90,568.22
  6. Step 6: Final answer
    x = 78,028.93

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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.