Home / 78,174.19-107,838.75-47,556.64

Finding the Fourth Proportional to 78,174.19, 107,838.75 and 47,556.64

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Solution

The fourth proportional to 78,174.19, 107,838.75 and 47,556.64 is: 65,602.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,174.19 : 107,838.75 = 47,556.64 : x
  2. Step 2: Convert to fraction form
    78,174.19/107,838.75 = 47,556.64/x
  3. Step 3: Cross multiply
    78,174.19x = 107,838.75 × 47,556.64
  4. Step 4: Simplify right side
    78,174.19x = 5,128,448,611.80
  5. Step 5: Solve for x
    x = 5,128,448,611.80/78,174.19
  6. Step 6: Final answer
    x = 65,602.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.