Home / 66,722.16-100,097.82-19,971.36

Finding the Fourth Proportional to 66,722.16, 100,097.82 and 19,971.36

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Solution

The fourth proportional to 66,722.16, 100,097.82 and 19,971.36 is: 29,961.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,722.16 : 100,097.82 = 19,971.36 : x
  2. Step 2: Convert to fraction form
    66,722.16/100,097.82 = 19,971.36/x
  3. Step 3: Cross multiply
    66,722.16x = 100,097.82 × 19,971.36
  4. Step 4: Simplify right side
    66,722.16x = 1,999,089,598.44
  5. Step 5: Solve for x
    x = 1,999,089,598.44/66,722.16
  6. Step 6: Final answer
    x = 29,961.40

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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.