Home / 85,291.40-127,935.90-38,544.20

Finding the Fourth Proportional to 85,291.40, 127,935.90 and 38,544.20

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Solution

The fourth proportional to 85,291.40, 127,935.90 and 38,544.20 is: 57,815.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,291.40 : 127,935.90 = 38,544.20 : x
  2. Step 2: Convert to fraction form
    85,291.40/127,935.90 = 38,544.20/x
  3. Step 3: Cross multiply
    85,291.40x = 127,935.90 × 38,544.20
  4. Step 4: Simplify right side
    85,291.40x = 4,931,186,916.78
  5. Step 5: Solve for x
    x = 4,931,186,916.78/85,291.40
  6. Step 6: Final answer
    x = 57,815.76

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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.