Home / 70,632.40-105,862.20-31,147.60

Finding the Fourth Proportional to 70,632.40, 105,862.20 and 31,147.60

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Solution

The fourth proportional to 70,632.40, 105,862.20 and 31,147.60 is: 46,683.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,632.40 : 105,862.20 = 31,147.60 : x
  2. Step 2: Convert to fraction form
    70,632.40/105,862.20 = 31,147.60/x
  3. Step 3: Cross multiply
    70,632.40x = 105,862.20 × 31,147.60
  4. Step 4: Simplify right side
    70,632.40x = 3,297,353,460.72
  5. Step 5: Solve for x
    x = 3,297,353,460.72/70,632.40
  6. Step 6: Final answer
    x = 46,683.30

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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.