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Finding the Fourth Proportional to 68,710.04, 103,060.10 and 21,323.92

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Solution

The fourth proportional to 68,710.04, 103,060.10 and 21,323.92 is: 31,984.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,710.04 : 103,060.10 = 21,323.92 : x
  2. Step 2: Convert to fraction form
    68,710.04/103,060.10 = 21,323.92/x
  3. Step 3: Cross multiply
    68,710.04x = 103,060.10 × 21,323.92
  4. Step 4: Simplify right side
    68,710.04x = 2,197,645,327.59
  5. Step 5: Solve for x
    x = 2,197,645,327.59/68,710.04
  6. Step 6: Final answer
    x = 31,984.34

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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.