Home / 50,421.45-75,657.68-20,860.50

Finding the Fourth Proportional to 50,421.45, 75,657.68 and 20,860.50

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Solution

The fourth proportional to 50,421.45, 75,657.68 and 20,860.50 is: 31,301.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,421.45 : 75,657.68 = 20,860.50 : x
  2. Step 2: Convert to fraction form
    50,421.45/75,657.68 = 20,860.50/x
  3. Step 3: Cross multiply
    50,421.45x = 75,657.68 × 20,860.50
  4. Step 4: Simplify right side
    50,421.45x = 1,578,256,707.50
  5. Step 5: Solve for x
    x = 1,578,256,707.50/50,421.45
  6. Step 6: Final answer
    x = 31,301.30

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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.