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Finding the Fourth Proportional to 66,332.90, 99,499.44 and 54,621.56

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Solution

The fourth proportional to 66,332.90, 99,499.44 and 54,621.56 is: 81,932.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,332.90 : 99,499.44 = 54,621.56 : x
  2. Step 2: Convert to fraction form
    66,332.90/99,499.44 = 54,621.56/x
  3. Step 3: Cross multiply
    66,332.90x = 99,499.44 × 54,621.56
  4. Step 4: Simplify right side
    66,332.90x = 5,434,814,631.93
  5. Step 5: Solve for x
    x = 5,434,814,631.93/66,332.90
  6. Step 6: Final answer
    x = 81,932.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.