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Finding the Fourth Proportional to 85,006.66, 127,393.34 and 53,786.02

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Solution

The fourth proportional to 85,006.66, 127,393.34 and 53,786.02 is: 80,605.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,006.66 : 127,393.34 = 53,786.02 : x
  2. Step 2: Convert to fraction form
    85,006.66/127,393.34 = 53,786.02/x
  3. Step 3: Cross multiply
    85,006.66x = 127,393.34 × 53,786.02
  4. Step 4: Simplify right side
    85,006.66x = 6,851,980,733.11
  5. Step 5: Solve for x
    x = 6,851,980,733.11/85,006.66
  6. Step 6: Final answer
    x = 80,605.22

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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.