Home / 66,784.18-100,153.20-19,386.42

Finding the Fourth Proportional to 66,784.18, 100,153.20 and 19,386.42

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Solution

The fourth proportional to 66,784.18, 100,153.20 and 19,386.42 is: 29,072.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,784.18 : 100,153.20 = 19,386.42 : x
  2. Step 2: Convert to fraction form
    66,784.18/100,153.20 = 19,386.42/x
  3. Step 3: Cross multiply
    66,784.18x = 100,153.20 × 19,386.42
  4. Step 4: Simplify right side
    66,784.18x = 1,941,612,072.24
  5. Step 5: Solve for x
    x = 1,941,612,072.24/66,784.18
  6. Step 6: Final answer
    x = 29,072.94

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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.