Home / 80,260.61-120,325.23-30,312.36

Finding the Fourth Proportional to 80,260.61, 120,325.23 and 30,312.36

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Solution

The fourth proportional to 80,260.61, 120,325.23 and 30,312.36 is: 45,443.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,260.61 : 120,325.23 = 30,312.36 : x
  2. Step 2: Convert to fraction form
    80,260.61/120,325.23 = 30,312.36/x
  3. Step 3: Cross multiply
    80,260.61x = 120,325.23 × 30,312.36
  4. Step 4: Simplify right side
    80,260.61x = 3,647,341,688.84
  5. Step 5: Solve for x
    x = 3,647,341,688.84/80,260.61
  6. Step 6: Final answer
    x = 45,443.74

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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.