Home / 88,181.12-121,688.20-49,940.06

Finding the Fourth Proportional to 88,181.12, 121,688.20 and 49,940.06

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Solution

The fourth proportional to 88,181.12, 121,688.20 and 49,940.06 is: 68,916.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,181.12 : 121,688.20 = 49,940.06 : x
  2. Step 2: Convert to fraction form
    88,181.12/121,688.20 = 49,940.06/x
  3. Step 3: Cross multiply
    88,181.12x = 121,688.20 × 49,940.06
  4. Step 4: Simplify right side
    88,181.12x = 6,077,115,463.28
  5. Step 5: Solve for x
    x = 6,077,115,463.28/88,181.12
  6. Step 6: Final answer
    x = 68,916.29

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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.