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Finding the Fourth Proportional to 66,494.88, 91,760.40 and 36,686.88

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Solution

The fourth proportional to 66,494.88, 91,760.40 and 36,686.88 is: 50,626.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,494.88 : 91,760.40 = 36,686.88 : x
  2. Step 2: Convert to fraction form
    66,494.88/91,760.40 = 36,686.88/x
  3. Step 3: Cross multiply
    66,494.88x = 91,760.40 × 36,686.88
  4. Step 4: Simplify right side
    66,494.88x = 3,366,402,783.55
  5. Step 5: Solve for x
    x = 3,366,402,783.55/66,494.88
  6. Step 6: Final answer
    x = 50,626.50

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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.