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Finding the Fourth Proportional to 79,135.64, 118,621.44 and 49,485.42

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Solution

The fourth proportional to 79,135.64, 118,621.44 and 49,485.42 is: 74,176.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,135.64 : 118,621.44 = 49,485.42 : x
  2. Step 2: Convert to fraction form
    79,135.64/118,621.44 = 49,485.42/x
  3. Step 3: Cross multiply
    79,135.64x = 118,621.44 × 49,485.42
  4. Step 4: Simplify right side
    79,135.64x = 5,870,031,779.40
  5. Step 5: Solve for x
    x = 5,870,031,779.40/79,135.64
  6. Step 6: Final answer
    x = 74,176.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.