Home / 90,690.69-125,155.28-50,406.15

Finding the Fourth Proportional to 90,690.69, 125,155.28 and 50,406.15

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Solution

The fourth proportional to 90,690.69, 125,155.28 and 50,406.15 is: 69,561.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,690.69 : 125,155.28 = 50,406.15 : x
  2. Step 2: Convert to fraction form
    90,690.69/125,155.28 = 50,406.15/x
  3. Step 3: Cross multiply
    90,690.69x = 125,155.28 × 50,406.15
  4. Step 4: Simplify right side
    90,690.69x = 6,308,595,564.94
  5. Step 5: Solve for x
    x = 6,308,595,564.94/90,690.69
  6. Step 6: Final answer
    x = 69,561.67

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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.