Home / 77,771.78-116,652.81-40,320.62

Finding the Fourth Proportional to 77,771.78, 116,652.81 and 40,320.62

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Solution

The fourth proportional to 77,771.78, 116,652.81 and 40,320.62 is: 60,478.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,771.78 : 116,652.81 = 40,320.62 : x
  2. Step 2: Convert to fraction form
    77,771.78/116,652.81 = 40,320.62/x
  3. Step 3: Cross multiply
    77,771.78x = 116,652.81 × 40,320.62
  4. Step 4: Simplify right side
    77,771.78x = 4,703,513,623.94
  5. Step 5: Solve for x
    x = 4,703,513,623.94/77,771.78
  6. Step 6: Final answer
    x = 60,478.41

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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.