Home / 70,931.16-106,438.20-39,367.80

Finding the Fourth Proportional to 70,931.16, 106,438.20 and 39,367.80

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Solution

The fourth proportional to 70,931.16, 106,438.20 and 39,367.80 is: 59,074.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,931.16 : 106,438.20 = 39,367.80 : x
  2. Step 2: Convert to fraction form
    70,931.16/106,438.20 = 39,367.80/x
  3. Step 3: Cross multiply
    70,931.16x = 106,438.20 × 39,367.80
  4. Step 4: Simplify right side
    70,931.16x = 4,190,237,769.96
  5. Step 5: Solve for x
    x = 4,190,237,769.96/70,931.16
  6. Step 6: Final answer
    x = 59,074.71

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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.