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Finding the Fourth Proportional to 85,901.00, 128,863.65 and 26,742.65

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Solution

The fourth proportional to 85,901.00, 128,863.65 and 26,742.65 is: 40,117.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,901.00 : 128,863.65 = 26,742.65 : x
  2. Step 2: Convert to fraction form
    85,901.00/128,863.65 = 26,742.65/x
  3. Step 3: Cross multiply
    85,901.00x = 128,863.65 × 26,742.65
  4. Step 4: Simplify right side
    85,901.00x = 3,446,154,845.35
  5. Step 5: Solve for x
    x = 3,446,154,845.35/85,901.00
  6. Step 6: Final answer
    x = 40,117.75

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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.