Home / 79,477.17-119,215.46-20,312.75

Finding the Fourth Proportional to 79,477.17, 119,215.46 and 20,312.75

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Solution

The fourth proportional to 79,477.17, 119,215.46 and 20,312.75 is: 30,469.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,477.17 : 119,215.46 = 20,312.75 : x
  2. Step 2: Convert to fraction form
    79,477.17/119,215.46 = 20,312.75/x
  3. Step 3: Cross multiply
    79,477.17x = 119,215.46 × 20,312.75
  4. Step 4: Simplify right side
    79,477.17x = 2,421,593,609.92
  5. Step 5: Solve for x
    x = 2,421,593,609.92/79,477.17
  6. Step 6: Final answer
    x = 30,469.05

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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.