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Finding the Fourth Proportional to 65,857.58, 90,883.56 and 35,642.96

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Solution

The fourth proportional to 65,857.58, 90,883.56 and 35,642.96 is: 49,187.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,857.58 : 90,883.56 = 35,642.96 : x
  2. Step 2: Convert to fraction form
    65,857.58/90,883.56 = 35,642.96/x
  3. Step 3: Cross multiply
    65,857.58x = 90,883.56 × 35,642.96
  4. Step 4: Simplify right side
    65,857.58x = 3,239,359,093.74
  5. Step 5: Solve for x
    x = 3,239,359,093.74/65,857.58
  6. Step 6: Final answer
    x = 49,187.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.