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Finding the Fourth Proportional to 70,794.36, 106,066.95 and 66,580.20

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Solution

The fourth proportional to 70,794.36, 106,066.95 and 66,580.20 is: 99,753.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,794.36 : 106,066.95 = 66,580.20 : x
  2. Step 2: Convert to fraction form
    70,794.36/106,066.95 = 66,580.20/x
  3. Step 3: Cross multiply
    70,794.36x = 106,066.95 × 66,580.20
  4. Step 4: Simplify right side
    70,794.36x = 7,061,959,009.56
  5. Step 5: Solve for x
    x = 7,061,959,009.56/70,794.36
  6. Step 6: Final answer
    x = 99,753.14

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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.