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Finding the Fourth Proportional to 60,361.08, 90,541.62 and 20,918.18

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Solution

The fourth proportional to 60,361.08, 90,541.62 and 20,918.18 is: 31,377.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,361.08 : 90,541.62 = 20,918.18 : x
  2. Step 2: Convert to fraction form
    60,361.08/90,541.62 = 20,918.18/x
  3. Step 3: Cross multiply
    60,361.08x = 90,541.62 × 20,918.18
  4. Step 4: Simplify right side
    60,361.08x = 1,893,965,904.65
  5. Step 5: Solve for x
    x = 1,893,965,904.65/60,361.08
  6. Step 6: Final answer
    x = 31,377.27

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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.