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Finding the Fourth Proportional to 45,420, 68,132.51 and 17,342.34

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Solution

The fourth proportional to 45,420, 68,132.51 and 17,342.34 is: 26,014.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,420 : 68,132.51 = 17,342.34 : x
  2. Step 2: Convert to fraction form
    45,420/68,132.51 = 17,342.34/x
  3. Step 3: Cross multiply
    45,420x = 68,132.51 × 17,342.34
  4. Step 4: Simplify right side
    45,420x = 1,181,577,066.76
  5. Step 5: Solve for x
    x = 1,181,577,066.76/45,420
  6. Step 6: Final answer
    x = 26,014.47

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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.