Home / 85,677.32-128,546.72-38,288.44

Finding the Fourth Proportional to 85,677.32, 128,546.72 and 38,288.44

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Solution

The fourth proportional to 85,677.32, 128,546.72 and 38,288.44 is: 57,446.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,677.32 : 128,546.72 = 38,288.44 : x
  2. Step 2: Convert to fraction form
    85,677.32/128,546.72 = 38,288.44/x
  3. Step 3: Cross multiply
    85,677.32x = 128,546.72 × 38,288.44
  4. Step 4: Simplify right side
    85,677.32x = 4,921,853,471.64
  5. Step 5: Solve for x
    x = 4,921,853,471.64/85,677.32
  6. Step 6: Final answer
    x = 57,446.40

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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.