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Finding the Fourth Proportional to 66,989.40, 100,477.17 and 33,695.88

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Solution

The fourth proportional to 66,989.40, 100,477.17 and 33,695.88 is: 50,540.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,989.40 : 100,477.17 = 33,695.88 : x
  2. Step 2: Convert to fraction form
    66,989.40/100,477.17 = 33,695.88/x
  3. Step 3: Cross multiply
    66,989.40x = 100,477.17 × 33,695.88
  4. Step 4: Simplify right side
    66,989.40x = 3,385,666,663.06
  5. Step 5: Solve for x
    x = 3,385,666,663.06/66,989.40
  6. Step 6: Final answer
    x = 50,540.33

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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.