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Finding the Fourth Proportional to 61,336.40, 91,939.80 and 34,984.40

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Solution

The fourth proportional to 61,336.40, 91,939.80 and 34,984.40 is: 52,439.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,336.40 : 91,939.80 = 34,984.40 : x
  2. Step 2: Convert to fraction form
    61,336.40/91,939.80 = 34,984.40/x
  3. Step 3: Cross multiply
    61,336.40x = 91,939.80 × 34,984.40
  4. Step 4: Simplify right side
    61,336.40x = 3,216,458,739.12
  5. Step 5: Solve for x
    x = 3,216,458,739.12/61,336.40
  6. Step 6: Final answer
    x = 52,439.64

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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.