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Finding the Fourth Proportional to 66,435.96, 91,693.44 and 39,594

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Solution

The fourth proportional to 66,435.96, 91,693.44 and 39,594 is: 54,646.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,435.96 : 91,693.44 = 39,594 : x
  2. Step 2: Convert to fraction form
    66,435.96/91,693.44 = 39,594/x
  3. Step 3: Cross multiply
    66,435.96x = 91,693.44 × 39,594
  4. Step 4: Simplify right side
    66,435.96x = 3,630,510,063.36
  5. Step 5: Solve for x
    x = 3,630,510,063.36/66,435.96
  6. Step 6: Final answer
    x = 54,646.76

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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.