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Finding the Fourth Proportional to 68,086.60, 101,984.10 and 56,422.60

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Solution

The fourth proportional to 68,086.60, 101,984.10 and 56,422.60 is: 84,513.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,086.60 : 101,984.10 = 56,422.60 : x
  2. Step 2: Convert to fraction form
    68,086.60/101,984.10 = 56,422.60/x
  3. Step 3: Cross multiply
    68,086.60x = 101,984.10 × 56,422.60
  4. Step 4: Simplify right side
    68,086.60x = 5,754,208,080.66
  5. Step 5: Solve for x
    x = 5,754,208,080.66/68,086.60
  6. Step 6: Final answer
    x = 84,513.08

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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.