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Finding the Fourth Proportional to 60,684, 91,041.36 and 16,908

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Solution

The fourth proportional to 60,684, 91,041.36 and 16,908 is: 25,366.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,684 : 91,041.36 = 16,908 : x
  2. Step 2: Convert to fraction form
    60,684/91,041.36 = 16,908/x
  3. Step 3: Cross multiply
    60,684x = 91,041.36 × 16,908
  4. Step 4: Simplify right side
    60,684x = 1,539,327,314.88
  5. Step 5: Solve for x
    x = 1,539,327,314.88/60,684
  6. Step 6: Final answer
    x = 25,366.28

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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.