Home / 66,742.76-92,086.80-39,147.28

Finding the Fourth Proportional to 66,742.76, 92,086.80 and 39,147.28

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Solution

The fourth proportional to 66,742.76, 92,086.80 and 39,147.28 is: 54,012.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,742.76 : 92,086.80 = 39,147.28 : x
  2. Step 2: Convert to fraction form
    66,742.76/92,086.80 = 39,147.28/x
  3. Step 3: Cross multiply
    66,742.76x = 92,086.80 × 39,147.28
  4. Step 4: Simplify right side
    66,742.76x = 3,604,947,743.90
  5. Step 5: Solve for x
    x = 3,604,947,743.90/66,742.76
  6. Step 6: Final answer
    x = 54,012.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.