Home / 90,639.81-125,081.01-50,352.84

Finding the Fourth Proportional to 90,639.81, 125,081.01 and 50,352.84

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Solution

The fourth proportional to 90,639.81, 125,081.01 and 50,352.84 is: 69,485.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,639.81 : 125,081.01 = 50,352.84 : x
  2. Step 2: Convert to fraction form
    90,639.81/125,081.01 = 50,352.84/x
  3. Step 3: Cross multiply
    90,639.81x = 125,081.01 × 50,352.84
  4. Step 4: Simplify right side
    90,639.81x = 6,298,184,083.57
  5. Step 5: Solve for x
    x = 6,298,184,083.57/90,639.81
  6. Step 6: Final answer
    x = 69,485.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.