Home / 43,292.07-64,940.55-12,129.75

Finding the Fourth Proportional to 43,292.07, 64,940.55 and 12,129.75

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Solution

The fourth proportional to 43,292.07, 64,940.55 and 12,129.75 is: 18,195.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,292.07 : 64,940.55 = 12,129.75 : x
  2. Step 2: Convert to fraction form
    43,292.07/64,940.55 = 12,129.75/x
  3. Step 3: Cross multiply
    43,292.07x = 64,940.55 × 12,129.75
  4. Step 4: Simplify right side
    43,292.07x = 787,712,636.36
  5. Step 5: Solve for x
    x = 787,712,636.36/43,292.07
  6. Step 6: Final answer
    x = 18,195.31

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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.