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Finding the Fourth Proportional to 45,691.94, 68,485.43 and 28,602.50

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Solution

The fourth proportional to 45,691.94, 68,485.43 and 28,602.50 is: 42,870.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,691.94 : 68,485.43 = 28,602.50 : x
  2. Step 2: Convert to fraction form
    45,691.94/68,485.43 = 28,602.50/x
  3. Step 3: Cross multiply
    45,691.94x = 68,485.43 × 28,602.50
  4. Step 4: Simplify right side
    45,691.94x = 1,958,854,511.58
  5. Step 5: Solve for x
    x = 1,958,854,511.58/45,691.94
  6. Step 6: Final answer
    x = 42,870.90

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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.