Home / 85,724.73-128,595.60-35,820.43

Finding the Fourth Proportional to 85,724.73, 128,595.60 and 35,820.43

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Solution

The fourth proportional to 85,724.73, 128,595.60 and 35,820.43 is: 53,734.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,724.73 : 128,595.60 = 35,820.43 : x
  2. Step 2: Convert to fraction form
    85,724.73/128,595.60 = 35,820.43/x
  3. Step 3: Cross multiply
    85,724.73x = 128,595.60 × 35,820.43
  4. Step 4: Simplify right side
    85,724.73x = 4,606,349,366.62
  5. Step 5: Solve for x
    x = 4,606,349,366.62/85,724.73
  6. Step 6: Final answer
    x = 53,734.20

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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.