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Finding the Fourth Proportional to 56,755.89, 85,114.60 and 19,305.95

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Solution

The fourth proportional to 56,755.89, 85,114.60 and 19,305.95 is: 28,952.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,755.89 : 85,114.60 = 19,305.95 : x
  2. Step 2: Convert to fraction form
    56,755.89/85,114.60 = 19,305.95/x
  3. Step 3: Cross multiply
    56,755.89x = 85,114.60 × 19,305.95
  4. Step 4: Simplify right side
    56,755.89x = 1,643,217,738.03
  5. Step 5: Solve for x
    x = 1,643,217,738.03/56,755.89
  6. Step 6: Final answer
    x = 28,952.37

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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.