Home / 89,920.20-134,880.30-30,757.80

Finding the Fourth Proportional to 89,920.20, 134,880.30 and 30,757.80

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Solution

The fourth proportional to 89,920.20, 134,880.30 and 30,757.80 is: 46,136.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,920.20 : 134,880.30 = 30,757.80 : x
  2. Step 2: Convert to fraction form
    89,920.20/134,880.30 = 30,757.80/x
  3. Step 3: Cross multiply
    89,920.20x = 134,880.30 × 30,757.80
  4. Step 4: Simplify right side
    89,920.20x = 4,148,621,291.34
  5. Step 5: Solve for x
    x = 4,148,621,291.34/89,920.20
  6. Step 6: Final answer
    x = 46,136.70

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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.