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Finding the Fourth Proportional to 66,119.01, 91,238.81 and 36,311.01

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Solution

The fourth proportional to 66,119.01, 91,238.81 and 36,311.01 is: 50,106.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,119.01 : 91,238.81 = 36,311.01 : x
  2. Step 2: Convert to fraction form
    66,119.01/91,238.81 = 36,311.01/x
  3. Step 3: Cross multiply
    66,119.01x = 91,238.81 × 36,311.01
  4. Step 4: Simplify right side
    66,119.01x = 3,312,973,342.30
  5. Step 5: Solve for x
    x = 3,312,973,342.30/66,119.01
  6. Step 6: Final answer
    x = 50,106.22

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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.