Home / 66,741.49-100,111.06-16,820.47

Finding the Fourth Proportional to 66,741.49, 100,111.06 and 16,820.47

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Solution

The fourth proportional to 66,741.49, 100,111.06 and 16,820.47 is: 25,230.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,741.49 : 100,111.06 = 16,820.47 : x
  2. Step 2: Convert to fraction form
    66,741.49/100,111.06 = 16,820.47/x
  3. Step 3: Cross multiply
    66,741.49x = 100,111.06 × 16,820.47
  4. Step 4: Simplify right side
    66,741.49x = 1,683,914,997.30
  5. Step 5: Solve for x
    x = 1,683,914,997.30/66,741.49
  6. Step 6: Final answer
    x = 25,230.41

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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.