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Finding the Fourth Proportional to 61,256.90, 91,896.15 and 21,836.90

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Solution

The fourth proportional to 61,256.90, 91,896.15 and 21,836.90 is: 32,759.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,256.90 : 91,896.15 = 21,836.90 : x
  2. Step 2: Convert to fraction form
    61,256.90/91,896.15 = 21,836.90/x
  3. Step 3: Cross multiply
    61,256.90x = 91,896.15 × 21,836.90
  4. Step 4: Simplify right side
    61,256.90x = 2,006,727,037.94
  5. Step 5: Solve for x
    x = 2,006,727,037.94/61,256.90
  6. Step 6: Final answer
    x = 32,759.20

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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.