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Finding the Fourth Proportional to 68,573.81, 94,650.89 and 39,899.02

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Solution

The fourth proportional to 68,573.81, 94,650.89 and 39,899.02 is: 55,071.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,573.81 : 94,650.89 = 39,899.02 : x
  2. Step 2: Convert to fraction form
    68,573.81/94,650.89 = 39,899.02/x
  3. Step 3: Cross multiply
    68,573.81x = 94,650.89 × 39,899.02
  4. Step 4: Simplify right side
    68,573.81x = 3,776,477,151.28
  5. Step 5: Solve for x
    x = 3,776,477,151.28/68,573.81
  6. Step 6: Final answer
    x = 55,071.71

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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.