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Finding the Fourth Proportional to 73,090.60, 100,865.36 and 39,556.60

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Solution

The fourth proportional to 73,090.60, 100,865.36 and 39,556.60 is: 54,588.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,090.60 : 100,865.36 = 39,556.60 : x
  2. Step 2: Convert to fraction form
    73,090.60/100,865.36 = 39,556.60/x
  3. Step 3: Cross multiply
    73,090.60x = 100,865.36 × 39,556.60
  4. Step 4: Simplify right side
    73,090.60x = 3,989,890,699.38
  5. Step 5: Solve for x
    x = 3,989,890,699.38/73,090.60
  6. Step 6: Final answer
    x = 54,588.29

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1.5x scale

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.