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Finding the Fourth Proportional to 85,333.38, 128,110.95 and 65,625.90

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Solution

The fourth proportional to 85,333.38, 128,110.95 and 65,625.90 is: 98,524.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,333.38 : 128,110.95 = 65,625.90 : x
  2. Step 2: Convert to fraction form
    85,333.38/128,110.95 = 65,625.90/x
  3. Step 3: Cross multiply
    85,333.38x = 128,110.95 × 65,625.90
  4. Step 4: Simplify right side
    85,333.38x = 8,407,396,393.61
  5. Step 5: Solve for x
    x = 8,407,396,393.61/85,333.38
  6. Step 6: Final answer
    x = 98,524.12

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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.