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Finding the Fourth Proportional to 66,392.94, 91,621.08 and 36,178.48

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Solution

The fourth proportional to 66,392.94, 91,621.08 and 36,178.48 is: 49,925.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,392.94 : 91,621.08 = 36,178.48 : x
  2. Step 2: Convert to fraction form
    66,392.94/91,621.08 = 36,178.48/x
  3. Step 3: Cross multiply
    66,392.94x = 91,621.08 × 36,178.48
  4. Step 4: Simplify right side
    66,392.94x = 3,314,711,410.36
  5. Step 5: Solve for x
    x = 3,314,711,410.36/66,392.94
  6. Step 6: Final answer
    x = 49,925.66

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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.