Home / 85,848.15-128,826.90-50,309.40

Finding the Fourth Proportional to 85,848.15, 128,826.90 and 50,309.40

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Solution

The fourth proportional to 85,848.15, 128,826.90 and 50,309.40 is: 75,496.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,848.15 : 128,826.90 = 50,309.40 : x
  2. Step 2: Convert to fraction form
    85,848.15/128,826.90 = 50,309.40/x
  3. Step 3: Cross multiply
    85,848.15x = 128,826.90 × 50,309.40
  4. Step 4: Simplify right side
    85,848.15x = 6,481,204,042.86
  5. Step 5: Solve for x
    x = 6,481,204,042.86/85,848.15
  6. Step 6: Final answer
    x = 75,496.14

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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.