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Finding the Fourth Proportional to 61,611.02, 84,984.06 and 40,391.66

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Solution

The fourth proportional to 61,611.02, 84,984.06 and 40,391.66 is: 55,714.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,611.02 : 84,984.06 = 40,391.66 : x
  2. Step 2: Convert to fraction form
    61,611.02/84,984.06 = 40,391.66/x
  3. Step 3: Cross multiply
    61,611.02x = 84,984.06 × 40,391.66
  4. Step 4: Simplify right side
    61,611.02x = 3,432,647,256.94
  5. Step 5: Solve for x
    x = 3,432,647,256.94/61,611.02
  6. Step 6: Final answer
    x = 55,714.83

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1.5x scale

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.