Home / 66,261.09-91,474.17-51,119.76

Finding the Fourth Proportional to 66,261.09, 91,474.17 and 51,119.76

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Solution

The fourth proportional to 66,261.09, 91,474.17 and 51,119.76 is: 70,571.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,261.09 : 91,474.17 = 51,119.76 : x
  2. Step 2: Convert to fraction form
    66,261.09/91,474.17 = 51,119.76/x
  3. Step 3: Cross multiply
    66,261.09x = 91,474.17 × 51,119.76
  4. Step 4: Simplify right side
    66,261.09x = 4,676,137,616.60
  5. Step 5: Solve for x
    x = 4,676,137,616.60/66,261.09
  6. Step 6: Final answer
    x = 70,571.40

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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.