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Finding the Fourth Proportional to 64,080.34, 87,788.60 and 61,684.43

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Solution

The fourth proportional to 64,080.34, 87,788.60 and 61,684.43 is: 84,506.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,080.34 : 87,788.60 = 61,684.43 : x
  2. Step 2: Convert to fraction form
    64,080.34/87,788.60 = 61,684.43/x
  3. Step 3: Cross multiply
    64,080.34x = 87,788.60 × 61,684.43
  4. Step 4: Simplify right side
    64,080.34x = 5,415,189,582.42
  5. Step 5: Solve for x
    x = 5,415,189,582.42/64,080.34
  6. Step 6: Final answer
    x = 84,506.26

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.