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Finding the Fourth Proportional to 66,991.95, 100,490.07 and 33,693.84

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Solution

The fourth proportional to 66,991.95, 100,490.07 and 33,693.84 is: 50,541.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,991.95 : 100,490.07 = 33,693.84 : x
  2. Step 2: Convert to fraction form
    66,991.95/100,490.07 = 33,693.84/x
  3. Step 3: Cross multiply
    66,991.95x = 100,490.07 × 33,693.84
  4. Step 4: Simplify right side
    66,991.95x = 3,385,896,340.17
  5. Step 5: Solve for x
    x = 3,385,896,340.17/66,991.95
  6. Step 6: Final answer
    x = 50,541.84

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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.