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Finding the Fourth Proportional to 66,393.60, 99,626.84 and 31,332.34

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Solution

The fourth proportional to 66,393.60, 99,626.84 and 31,332.34 is: 47,015.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,393.60 : 99,626.84 = 31,332.34 : x
  2. Step 2: Convert to fraction form
    66,393.60/99,626.84 = 31,332.34/x
  3. Step 3: Cross multiply
    66,393.60x = 99,626.84 × 31,332.34
  4. Step 4: Simplify right side
    66,393.60x = 3,121,542,024.01
  5. Step 5: Solve for x
    x = 3,121,542,024.01/66,393.60
  6. Step 6: Final answer
    x = 47,015.71

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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.