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Finding the Fourth Proportional to 66,397.72, 91,628.02 and 36,184.36

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Solution

The fourth proportional to 66,397.72, 91,628.02 and 36,184.36 is: 49,933.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,397.72 : 91,628.02 = 36,184.36 : x
  2. Step 2: Convert to fraction form
    66,397.72/91,628.02 = 36,184.36/x
  3. Step 3: Cross multiply
    66,397.72x = 91,628.02 × 36,184.36
  4. Step 4: Simplify right side
    66,397.72x = 3,315,501,261.77
  5. Step 5: Solve for x
    x = 3,315,501,261.77/66,397.72
  6. Step 6: Final answer
    x = 49,933.96

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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.