Home / 85,833.12-128,705.76-35,899.56

Finding the Fourth Proportional to 85,833.12, 128,705.76 and 35,899.56

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Solution

The fourth proportional to 85,833.12, 128,705.76 and 35,899.56 is: 53,830.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,833.12 : 128,705.76 = 35,899.56 : x
  2. Step 2: Convert to fraction form
    85,833.12/128,705.76 = 35,899.56/x
  3. Step 3: Cross multiply
    85,833.12x = 128,705.76 × 35,899.56
  4. Step 4: Simplify right side
    85,833.12x = 4,620,480,153.47
  5. Step 5: Solve for x
    x = 4,620,480,153.47/85,833.12
  6. Step 6: Final answer
    x = 53,830.97

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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.