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Finding the Fourth Proportional to 66,133, 91,269.66 and 36,330.76

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Solution

The fourth proportional to 66,133, 91,269.66 and 36,330.76 is: 50,139.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,133 : 91,269.66 = 36,330.76 : x
  2. Step 2: Convert to fraction form
    66,133/91,269.66 = 36,330.76/x
  3. Step 3: Cross multiply
    66,133x = 91,269.66 × 36,330.76
  4. Step 4: Simplify right side
    66,133x = 3,315,896,112.74
  5. Step 5: Solve for x
    x = 3,315,896,112.74/66,133
  6. Step 6: Final answer
    x = 50,139.81

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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.