Home / 90,802.20-136,247.22-40,917.72

Finding the Fourth Proportional to 90,802.20, 136,247.22 and 40,917.72

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Solution

The fourth proportional to 90,802.20, 136,247.22 and 40,917.72 is: 61,396.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,802.20 : 136,247.22 = 40,917.72 : x
  2. Step 2: Convert to fraction form
    90,802.20/136,247.22 = 40,917.72/x
  3. Step 3: Cross multiply
    90,802.20x = 136,247.22 × 40,917.72
  4. Step 4: Simplify right side
    90,802.20x = 5,574,925,598.74
  5. Step 5: Solve for x
    x = 5,574,925,598.74/90,802.20
  6. Step 6: Final answer
    x = 61,396.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.