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Finding the Fourth Proportional to 66,550.40, 91,764.96 and 45,342.08

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Solution

The fourth proportional to 66,550.40, 91,764.96 and 45,342.08 is: 62,521.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,550.40 : 91,764.96 = 45,342.08 : x
  2. Step 2: Convert to fraction form
    66,550.40/91,764.96 = 45,342.08/x
  3. Step 3: Cross multiply
    66,550.40x = 91,764.96 × 45,342.08
  4. Step 4: Simplify right side
    66,550.40x = 4,160,814,157.52
  5. Step 5: Solve for x
    x = 4,160,814,157.52/66,550.40
  6. Step 6: Final answer
    x = 62,521.25

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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.