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Finding the Fourth Proportional to 43,610, 65,415.64 and 12,445.26

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Solution

The fourth proportional to 43,610, 65,415.64 and 12,445.26 is: 18,668.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,610 : 65,415.64 = 12,445.26 : x
  2. Step 2: Convert to fraction form
    43,610/65,415.64 = 12,445.26/x
  3. Step 3: Cross multiply
    43,610x = 65,415.64 × 12,445.26
  4. Step 4: Simplify right side
    43,610x = 814,114,647.87
  5. Step 5: Solve for x
    x = 814,114,647.87/43,610
  6. Step 6: Final answer
    x = 18,668.07

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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.