Home / 90,703.71-125,171.58-50,421.21

Finding the Fourth Proportional to 90,703.71, 125,171.58 and 50,421.21

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Solution

The fourth proportional to 90,703.71, 125,171.58 and 50,421.21 is: 69,581.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,703.71 : 125,171.58 = 50,421.21 : x
  2. Step 2: Convert to fraction form
    90,703.71/125,171.58 = 50,421.21/x
  3. Step 3: Cross multiply
    90,703.71x = 125,171.58 × 50,421.21
  4. Step 4: Simplify right side
    90,703.71x = 6,311,302,521.21
  5. Step 5: Solve for x
    x = 6,311,302,521.21/90,703.71
  6. Step 6: Final answer
    x = 69,581.53

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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.