Home / 66,143.53-99,228.96-21,772.94

Finding the Fourth Proportional to 66,143.53, 99,228.96 and 21,772.94

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Solution

The fourth proportional to 66,143.53, 99,228.96 and 21,772.94 is: 32,663.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,143.53 : 99,228.96 = 21,772.94 : x
  2. Step 2: Convert to fraction form
    66,143.53/99,228.96 = 21,772.94/x
  3. Step 3: Cross multiply
    66,143.53x = 99,228.96 × 21,772.94
  4. Step 4: Simplify right side
    66,143.53x = 2,160,506,440.41
  5. Step 5: Solve for x
    x = 2,160,506,440.41/66,143.53
  6. Step 6: Final answer
    x = 32,663.91

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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.