Home / 50,421.76-75,658.15-20,860.81

Finding the Fourth Proportional to 50,421.76, 75,658.15 and 20,860.81

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Solution

The fourth proportional to 50,421.76, 75,658.15 and 20,860.81 is: 31,301.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,421.76 : 75,658.15 = 20,860.81 : x
  2. Step 2: Convert to fraction form
    50,421.76/75,658.15 = 20,860.81/x
  3. Step 3: Cross multiply
    50,421.76x = 75,658.15 × 20,860.81
  4. Step 4: Simplify right side
    50,421.76x = 1,578,290,129.03
  5. Step 5: Solve for x
    x = 1,578,290,129.03/50,421.76
  6. Step 6: Final answer
    x = 31,301.77

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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.