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Finding the Fourth Proportional to 85,926.77, 128,859.41 and 29,751.81

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Solution

The fourth proportional to 85,926.77, 128,859.41 and 29,751.81 is: 44,617.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,926.77 : 128,859.41 = 29,751.81 : x
  2. Step 2: Convert to fraction form
    85,926.77/128,859.41 = 29,751.81/x
  3. Step 3: Cross multiply
    85,926.77x = 128,859.41 × 29,751.81
  4. Step 4: Simplify right side
    85,926.77x = 3,833,800,106.83
  5. Step 5: Solve for x
    x = 3,833,800,106.83/85,926.77
  6. Step 6: Final answer
    x = 44,617.06

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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.