Home / 71,438.22-107,148.69-18,851.67

Finding the Fourth Proportional to 71,438.22, 107,148.69 and 18,851.67

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Solution

The fourth proportional to 71,438.22, 107,148.69 and 18,851.67 is: 28,275.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,438.22 : 107,148.69 = 18,851.67 : x
  2. Step 2: Convert to fraction form
    71,438.22/107,148.69 = 18,851.67/x
  3. Step 3: Cross multiply
    71,438.22x = 107,148.69 × 18,851.67
  4. Step 4: Simplify right side
    71,438.22x = 2,019,931,744.81
  5. Step 5: Solve for x
    x = 2,019,931,744.81/71,438.22
  6. Step 6: Final answer
    x = 28,275.23

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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.