Home / 313,760.36-470,636.40-77,105.10

Finding the Fourth Proportional to 313,760.36, 470,636.40 and 77,105.10

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Solution

The fourth proportional to 313,760.36, 470,636.40 and 77,105.10 is: 115,656.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,760.36 : 470,636.40 = 77,105.10 : x
  2. Step 2: Convert to fraction form
    313,760.36/470,636.40 = 77,105.10/x
  3. Step 3: Cross multiply
    313,760.36x = 470,636.40 × 77,105.10
  4. Step 4: Simplify right side
    313,760.36x = 36,288,466,685.64
  5. Step 5: Solve for x
    x = 36,288,466,685.64/313,760.36
  6. Step 6: Final answer
    x = 115,656.63

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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.