Home / 66,842.94-92,243.26-39,986.58

Finding the Fourth Proportional to 66,842.94, 92,243.26 and 39,986.58

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Solution

The fourth proportional to 66,842.94, 92,243.26 and 39,986.58 is: 55,181.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,842.94 : 92,243.26 = 39,986.58 : x
  2. Step 2: Convert to fraction form
    66,842.94/92,243.26 = 39,986.58/x
  3. Step 3: Cross multiply
    66,842.94x = 92,243.26 × 39,986.58
  4. Step 4: Simplify right side
    66,842.94x = 3,688,492,064.91
  5. Step 5: Solve for x
    x = 3,688,492,064.91/66,842.94
  6. Step 6: Final answer
    x = 55,181.48

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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.