Home / 78,606.28-117,909.51-19,441.09

Finding the Fourth Proportional to 78,606.28, 117,909.51 and 19,441.09

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Solution

The fourth proportional to 78,606.28, 117,909.51 and 19,441.09 is: 29,161.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,606.28 : 117,909.51 = 19,441.09 : x
  2. Step 2: Convert to fraction form
    78,606.28/117,909.51 = 19,441.09/x
  3. Step 3: Cross multiply
    78,606.28x = 117,909.51 × 19,441.09
  4. Step 4: Simplify right side
    78,606.28x = 2,292,289,395.77
  5. Step 5: Solve for x
    x = 2,292,289,395.77/78,606.28
  6. Step 6: Final answer
    x = 29,161.66

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1.5x scale

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.