Home / 66,701.54-91,958.05-42,786.70

Finding the Fourth Proportional to 66,701.54, 91,958.05 and 42,786.70

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Solution

The fourth proportional to 66,701.54, 91,958.05 and 42,786.70 is: 58,987.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,701.54 : 91,958.05 = 42,786.70 : x
  2. Step 2: Convert to fraction form
    66,701.54/91,958.05 = 42,786.70/x
  3. Step 3: Cross multiply
    66,701.54x = 91,958.05 × 42,786.70
  4. Step 4: Simplify right side
    66,701.54x = 3,934,581,497.94
  5. Step 5: Solve for x
    x = 3,934,581,497.94/66,701.54
  6. Step 6: Final answer
    x = 58,987.87

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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.