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Finding the Fourth Proportional to 66,465.75, 91,722.74 and 36,657.75

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Solution

The fourth proportional to 66,465.75, 91,722.74 and 36,657.75 is: 50,587.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,465.75 : 91,722.74 = 36,657.75 : x
  2. Step 2: Convert to fraction form
    66,465.75/91,722.74 = 36,657.75/x
  3. Step 3: Cross multiply
    66,465.75x = 91,722.74 × 36,657.75
  4. Step 4: Simplify right side
    66,465.75x = 3,362,349,272.24
  5. Step 5: Solve for x
    x = 3,362,349,272.24/66,465.75
  6. Step 6: Final answer
    x = 50,587.70

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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.