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Finding the Fourth Proportional to 30,759.80, 42,448.50 and 16,612.63

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Solution

The fourth proportional to 30,759.80, 42,448.50 and 16,612.63 is: 22,925.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,759.80 : 42,448.50 = 16,612.63 : x
  2. Step 2: Convert to fraction form
    30,759.80/42,448.50 = 16,612.63/x
  3. Step 3: Cross multiply
    30,759.80x = 42,448.50 × 16,612.63
  4. Step 4: Simplify right side
    30,759.80x = 705,181,118.43
  5. Step 5: Solve for x
    x = 705,181,118.43/30,759.80
  6. Step 6: Final answer
    x = 22,925.42

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.