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Finding the Fourth Proportional to 181,645, 272,511.25 and 56,986

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Solution

The fourth proportional to 181,645, 272,511.25 and 56,986 is: 85,492.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,645 : 272,511.25 = 56,986 : x
  2. Step 2: Convert to fraction form
    181,645/272,511.25 = 56,986/x
  3. Step 3: Cross multiply
    181,645x = 272,511.25 × 56,986
  4. Step 4: Simplify right side
    181,645x = 15,529,326,092.50
  5. Step 5: Solve for x
    x = 15,529,326,092.50/181,645
  6. Step 6: Final answer
    x = 85,492.73

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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.