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Finding the Fourth Proportional to 85,466.80, 117,942.24 and 47,740.96

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Solution

The fourth proportional to 85,466.80, 117,942.24 and 47,740.96 is: 65,881.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,466.80 : 117,942.24 = 47,740.96 : x
  2. Step 2: Convert to fraction form
    85,466.80/117,942.24 = 47,740.96/x
  3. Step 3: Cross multiply
    85,466.80x = 117,942.24 × 47,740.96
  4. Step 4: Simplify right side
    85,466.80x = 5,630,675,762.15
  5. Step 5: Solve for x
    x = 5,630,675,762.15/85,466.80
  6. Step 6: Final answer
    x = 65,881.44

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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.