Home / 66,219.40-99,329.10-38,128.60

Finding the Fourth Proportional to 66,219.40, 99,329.10 and 38,128.60

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Solution

The fourth proportional to 66,219.40, 99,329.10 and 38,128.60 is: 57,192.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,219.40 : 99,329.10 = 38,128.60 : x
  2. Step 2: Convert to fraction form
    66,219.40/99,329.10 = 38,128.60/x
  3. Step 3: Cross multiply
    66,219.40x = 99,329.10 × 38,128.60
  4. Step 4: Simplify right side
    66,219.40x = 3,787,279,522.26
  5. Step 5: Solve for x
    x = 3,787,279,522.26/66,219.40
  6. Step 6: Final answer
    x = 57,192.90

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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.