Home / 85,935.10-128,750.16-35,905.12

Finding the Fourth Proportional to 85,935.10, 128,750.16 and 35,905.12

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Solution

The fourth proportional to 85,935.10, 128,750.16 and 35,905.12 is: 53,793.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,935.10 : 128,750.16 = 35,905.12 : x
  2. Step 2: Convert to fraction form
    85,935.10/128,750.16 = 35,905.12/x
  3. Step 3: Cross multiply
    85,935.10x = 128,750.16 × 35,905.12
  4. Step 4: Simplify right side
    85,935.10x = 4,622,789,944.82
  5. Step 5: Solve for x
    x = 4,622,789,944.82/85,935.10
  6. Step 6: Final answer
    x = 53,793.97

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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.