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Finding the Fourth Proportional to 66,379.58, 91,602.75 and 36,165.28

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Solution

The fourth proportional to 66,379.58, 91,602.75 and 36,165.28 is: 49,907.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,379.58 : 91,602.75 = 36,165.28 : x
  2. Step 2: Convert to fraction form
    66,379.58/91,602.75 = 36,165.28/x
  3. Step 3: Cross multiply
    66,379.58x = 91,602.75 × 36,165.28
  4. Step 4: Simplify right side
    66,379.58x = 3,312,839,102.52
  5. Step 5: Solve for x
    x = 3,312,839,102.52/66,379.58
  6. Step 6: Final answer
    x = 49,907.50

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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.