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Finding the Fourth Proportional to 85,242.97, 117,641.70 and 49,432.67

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Solution

The fourth proportional to 85,242.97, 117,641.70 and 49,432.67 is: 68,220.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,242.97 : 117,641.70 = 49,432.67 : x
  2. Step 2: Convert to fraction form
    85,242.97/117,641.70 = 49,432.67/x
  3. Step 3: Cross multiply
    85,242.97x = 117,641.70 × 49,432.67
  4. Step 4: Simplify right side
    85,242.97x = 5,815,343,334.34
  5. Step 5: Solve for x
    x = 5,815,343,334.34/85,242.97
  6. Step 6: Final answer
    x = 68,220.80

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.