Home / 85,288.40-127,931.40-38,541.20

Finding the Fourth Proportional to 85,288.40, 127,931.40 and 38,541.20

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Solution

The fourth proportional to 85,288.40, 127,931.40 and 38,541.20 is: 57,811.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,288.40 : 127,931.40 = 38,541.20 : x
  2. Step 2: Convert to fraction form
    85,288.40/127,931.40 = 38,541.20/x
  3. Step 3: Cross multiply
    85,288.40x = 127,931.40 × 38,541.20
  4. Step 4: Simplify right side
    85,288.40x = 4,930,629,673.68
  5. Step 5: Solve for x
    x = 4,930,629,673.68/85,288.40
  6. Step 6: Final answer
    x = 57,811.26

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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.