Home / 85,473.42-128,206.27-57,405.30

Finding the Fourth Proportional to 85,473.42, 128,206.27 and 57,405.30

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Solution

The fourth proportional to 85,473.42, 128,206.27 and 57,405.30 is: 86,105.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,473.42 : 128,206.27 = 57,405.30 : x
  2. Step 2: Convert to fraction form
    85,473.42/128,206.27 = 57,405.30/x
  3. Step 3: Cross multiply
    85,473.42x = 128,206.27 × 57,405.30
  4. Step 4: Simplify right side
    85,473.42x = 7,359,719,391.23
  5. Step 5: Solve for x
    x = 7,359,719,391.23/85,473.42
  6. Step 6: Final answer
    x = 86,105.36

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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.