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Finding the Fourth Proportional to 66,155.89, 91,232.58 and 43,454.83

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Solution

The fourth proportional to 66,155.89, 91,232.58 and 43,454.83 is: 59,926.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,155.89 : 91,232.58 = 43,454.83 : x
  2. Step 2: Convert to fraction form
    66,155.89/91,232.58 = 43,454.83/x
  3. Step 3: Cross multiply
    66,155.89x = 91,232.58 × 43,454.83
  4. Step 4: Simplify right side
    66,155.89x = 3,964,496,254.36
  5. Step 5: Solve for x
    x = 3,964,496,254.36/66,155.89
  6. Step 6: Final answer
    x = 59,926.58

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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.