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Finding the Fourth Proportional to 60,834.26, 91,248.64 and 20,856.80

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Solution

The fourth proportional to 60,834.26, 91,248.64 and 20,856.80 is: 31,284.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,834.26 : 91,248.64 = 20,856.80 : x
  2. Step 2: Convert to fraction form
    60,834.26/91,248.64 = 20,856.80/x
  3. Step 3: Cross multiply
    60,834.26x = 91,248.64 × 20,856.80
  4. Step 4: Simplify right side
    60,834.26x = 1,903,154,634.75
  5. Step 5: Solve for x
    x = 1,903,154,634.75/60,834.26
  6. Step 6: Final answer
    x = 31,284.26

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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.