Home / 66,679.36-92,020.88-38,389.12

Finding the Fourth Proportional to 66,679.36, 92,020.88 and 38,389.12

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Solution

The fourth proportional to 66,679.36, 92,020.88 and 38,389.12 is: 52,978.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,679.36 : 92,020.88 = 38,389.12 : x
  2. Step 2: Convert to fraction form
    66,679.36/92,020.88 = 38,389.12/x
  3. Step 3: Cross multiply
    66,679.36x = 92,020.88 × 38,389.12
  4. Step 4: Simplify right side
    66,679.36x = 3,532,600,604.83
  5. Step 5: Solve for x
    x = 3,532,600,604.83/66,679.36
  6. Step 6: Final answer
    x = 52,978.92

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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.