Home / 66,816.20-100,079.92-62,890.40

Finding the Fourth Proportional to 66,816.20, 100,079.92 and 62,890.40

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Solution

The fourth proportional to 66,816.20, 100,079.92 and 62,890.40 is: 94,199.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,816.20 : 100,079.92 = 62,890.40 : x
  2. Step 2: Convert to fraction form
    66,816.20/100,079.92 = 62,890.40/x
  3. Step 3: Cross multiply
    66,816.20x = 100,079.92 × 62,890.40
  4. Step 4: Simplify right side
    66,816.20x = 6,294,066,200.77
  5. Step 5: Solve for x
    x = 6,294,066,200.77/66,816.20
  6. Step 6: Final answer
    x = 94,199.70

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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.