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Finding the Fourth Proportional to 70,965, 106,435.26 and 21,044.52

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Solution

The fourth proportional to 70,965, 106,435.26 and 21,044.52 is: 31,563.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,965 : 106,435.26 = 21,044.52 : x
  2. Step 2: Convert to fraction form
    70,965/106,435.26 = 21,044.52/x
  3. Step 3: Cross multiply
    70,965x = 106,435.26 × 21,044.52
  4. Step 4: Simplify right side
    70,965x = 2,239,878,957.78
  5. Step 5: Solve for x
    x = 2,239,878,957.78/70,965
  6. Step 6: Final answer
    x = 31,563.15

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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.