Home / 70,576.40-105,778.20-31,091.60

Finding the Fourth Proportional to 70,576.40, 105,778.20 and 31,091.60

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Solution

The fourth proportional to 70,576.40, 105,778.20 and 31,091.60 is: 46,599.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,576.40 : 105,778.20 = 31,091.60 : x
  2. Step 2: Convert to fraction form
    70,576.40/105,778.20 = 31,091.60/x
  3. Step 3: Cross multiply
    70,576.40x = 105,778.20 × 31,091.60
  4. Step 4: Simplify right side
    70,576.40x = 3,288,813,483.12
  5. Step 5: Solve for x
    x = 3,288,813,483.12/70,576.40
  6. Step 6: Final answer
    x = 46,599.34

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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.