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Finding the Fourth Proportional to 66,715.82, 92,050.54 and 39,846.50

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Solution

The fourth proportional to 66,715.82, 92,050.54 and 39,846.50 is: 54,977.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,715.82 : 92,050.54 = 39,846.50 : x
  2. Step 2: Convert to fraction form
    66,715.82/92,050.54 = 39,846.50/x
  3. Step 3: Cross multiply
    66,715.82x = 92,050.54 × 39,846.50
  4. Step 4: Simplify right side
    66,715.82x = 3,667,891,282.24
  5. Step 5: Solve for x
    x = 3,667,891,282.24/66,715.82
  6. Step 6: Final answer
    x = 54,977.84

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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.