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Finding the Fourth Proportional to 66,927.28, 100,409.28 and 54,416.20

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Solution

The fourth proportional to 66,927.28, 100,409.28 and 54,416.20 is: 81,639.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,927.28 : 100,409.28 = 54,416.20 : x
  2. Step 2: Convert to fraction form
    66,927.28/100,409.28 = 54,416.20/x
  3. Step 3: Cross multiply
    66,927.28x = 100,409.28 × 54,416.20
  4. Step 4: Simplify right side
    66,927.28x = 5,463,891,462.34
  5. Step 5: Solve for x
    x = 5,463,891,462.34/66,927.28
  6. Step 6: Final answer
    x = 81,639.23

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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.