Home / 90,802.22-136,203.94-31,639.02

Finding the Fourth Proportional to 90,802.22, 136,203.94 and 31,639.02

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Solution

The fourth proportional to 90,802.22, 136,203.94 and 31,639.02 is: 47,458.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,802.22 : 136,203.94 = 31,639.02 : x
  2. Step 2: Convert to fraction form
    90,802.22/136,203.94 = 31,639.02/x
  3. Step 3: Cross multiply
    90,802.22x = 136,203.94 × 31,639.02
  4. Step 4: Simplify right side
    90,802.22x = 4,309,359,181.74
  5. Step 5: Solve for x
    x = 4,309,359,181.74/90,802.22
  6. Step 6: Final answer
    x = 47,458.74

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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.