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Finding the Fourth Proportional to 67,779.86, 101,670.48 and 17,867.12

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Solution

The fourth proportional to 67,779.86, 101,670.48 and 17,867.12 is: 26,800.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,779.86 : 101,670.48 = 17,867.12 : x
  2. Step 2: Convert to fraction form
    67,779.86/101,670.48 = 17,867.12/x
  3. Step 3: Cross multiply
    67,779.86x = 101,670.48 × 17,867.12
  4. Step 4: Simplify right side
    67,779.86x = 1,816,558,666.62
  5. Step 5: Solve for x
    x = 1,816,558,666.62/67,779.86
  6. Step 6: Final answer
    x = 26,800.86

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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.