Home / 85,628.87-128,462.83-46,185.11

Finding the Fourth Proportional to 85,628.87, 128,462.83 and 46,185.11

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Solution

The fourth proportional to 85,628.87, 128,462.83 and 46,185.11 is: 69,288.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,628.87 : 128,462.83 = 46,185.11 : x
  2. Step 2: Convert to fraction form
    85,628.87/128,462.83 = 46,185.11/x
  3. Step 3: Cross multiply
    85,628.87x = 128,462.83 × 46,185.11
  4. Step 4: Simplify right side
    85,628.87x = 5,933,069,176.68
  5. Step 5: Solve for x
    x = 5,933,069,176.68/85,628.87
  6. Step 6: Final answer
    x = 69,288.19

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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.