Home / 85,734.32-128,539.17-35,828.68

Finding the Fourth Proportional to 85,734.32, 128,539.17 and 35,828.68

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Solution

The fourth proportional to 85,734.32, 128,539.17 and 35,828.68 is: 53,716.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,734.32 : 128,539.17 = 35,828.68 : x
  2. Step 2: Convert to fraction form
    85,734.32/128,539.17 = 35,828.68/x
  3. Step 3: Cross multiply
    85,734.32x = 128,539.17 × 35,828.68
  4. Step 4: Simplify right side
    85,734.32x = 4,605,388,709.06
  5. Step 5: Solve for x
    x = 4,605,388,709.06/85,734.32
  6. Step 6: Final answer
    x = 53,716.98

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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.