Home / 78,008.04-117,011.70-18,843.54

Finding the Fourth Proportional to 78,008.04, 117,011.70 and 18,843.54

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Solution

The fourth proportional to 78,008.04, 117,011.70 and 18,843.54 is: 28,265.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,008.04 : 117,011.70 = 18,843.54 : x
  2. Step 2: Convert to fraction form
    78,008.04/117,011.70 = 18,843.54/x
  3. Step 3: Cross multiply
    78,008.04x = 117,011.70 × 18,843.54
  4. Step 4: Simplify right side
    78,008.04x = 2,204,914,649.42
  5. Step 5: Solve for x
    x = 2,204,914,649.42/78,008.04
  6. Step 6: Final answer
    x = 28,265.22

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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.