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Finding the Fourth Proportional to 45,293.86, 67,934.66 and 17,221

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Solution

The fourth proportional to 45,293.86, 67,934.66 and 17,221 is: 25,829.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,293.86 : 67,934.66 = 17,221 : x
  2. Step 2: Convert to fraction form
    45,293.86/67,934.66 = 17,221/x
  3. Step 3: Cross multiply
    45,293.86x = 67,934.66 × 17,221
  4. Step 4: Simplify right side
    45,293.86x = 1,169,902,779.86
  5. Step 5: Solve for x
    x = 1,169,902,779.86/45,293.86
  6. Step 6: Final answer
    x = 25,829.17

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1.5x scale

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.