Home / 66,438.04-91,673.22-38,143.12

Finding the Fourth Proportional to 66,438.04, 91,673.22 and 38,143.12

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Solution

The fourth proportional to 66,438.04, 91,673.22 and 38,143.12 is: 52,631.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,438.04 : 91,673.22 = 38,143.12 : x
  2. Step 2: Convert to fraction form
    66,438.04/91,673.22 = 38,143.12/x
  3. Step 3: Cross multiply
    66,438.04x = 91,673.22 × 38,143.12
  4. Step 4: Simplify right side
    66,438.04x = 3,496,702,631.25
  5. Step 5: Solve for x
    x = 3,496,702,631.25/66,438.04
  6. Step 6: Final answer
    x = 52,631.03

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Find fourth proportional to 66,439.04, 91,674.60 and 38,144.12
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.