Home / 78,650.04-117,858.39-57,771.48

Finding the Fourth Proportional to 78,650.04, 117,858.39 and 57,771.48

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Solution

The fourth proportional to 78,650.04, 117,858.39 and 57,771.48 is: 86,571.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,650.04 : 117,858.39 = 57,771.48 : x
  2. Step 2: Convert to fraction form
    78,650.04/117,858.39 = 57,771.48/x
  3. Step 3: Cross multiply
    78,650.04x = 117,858.39 × 57,771.48
  4. Step 4: Simplify right side
    78,650.04x = 6,808,853,031.43
  5. Step 5: Solve for x
    x = 6,808,853,031.43/78,650.04
  6. Step 6: Final answer
    x = 86,571.52

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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.