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Finding the Fourth Proportional to 85,142.98, 117,516.99 and 49,352.86

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Solution

The fourth proportional to 85,142.98, 117,516.99 and 49,352.86 is: 68,118.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,142.98 : 117,516.99 = 49,352.86 : x
  2. Step 2: Convert to fraction form
    85,142.98/117,516.99 = 49,352.86/x
  3. Step 3: Cross multiply
    85,142.98x = 117,516.99 × 49,352.86
  4. Step 4: Simplify right side
    85,142.98x = 5,799,799,555.09
  5. Step 5: Solve for x
    x = 5,799,799,555.09/85,142.98
  6. Step 6: Final answer
    x = 68,118.35

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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.