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Finding the Fourth Proportional to 85,755.33, 128,633.04 and 35,808.20

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Solution

The fourth proportional to 85,755.33, 128,633.04 and 35,808.20 is: 53,712.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,755.33 : 128,633.04 = 35,808.20 : x
  2. Step 2: Convert to fraction form
    85,755.33/128,633.04 = 35,808.20/x
  3. Step 3: Cross multiply
    85,755.33x = 128,633.04 × 35,808.20
  4. Step 4: Simplify right side
    85,755.33x = 4,606,117,622.93
  5. Step 5: Solve for x
    x = 4,606,117,622.93/85,755.33
  6. Step 6: Final answer
    x = 53,712.32

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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.