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Finding the Fourth Proportional to 44,085.52, 66,128.82 and 12,921.40

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Solution

The fourth proportional to 44,085.52, 66,128.82 and 12,921.40 is: 19,382.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,085.52 : 66,128.82 = 12,921.40 : x
  2. Step 2: Convert to fraction form
    44,085.52/66,128.82 = 12,921.40/x
  3. Step 3: Cross multiply
    44,085.52x = 66,128.82 × 12,921.40
  4. Step 4: Simplify right side
    44,085.52x = 854,476,934.75
  5. Step 5: Solve for x
    x = 854,476,934.75/44,085.52
  6. Step 6: Final answer
    x = 19,382.26

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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.