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Finding the Fourth Proportional to 109,368.40, 163,962.60 and 49,400.80

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Solution

The fourth proportional to 109,368.40, 163,962.60 and 49,400.80 is: 74,060.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,368.40 : 163,962.60 = 49,400.80 : x
  2. Step 2: Convert to fraction form
    109,368.40/163,962.60 = 49,400.80/x
  3. Step 3: Cross multiply
    109,368.40x = 163,962.60 × 49,400.80
  4. Step 4: Simplify right side
    109,368.40x = 8,099,883,610.08
  5. Step 5: Solve for x
    x = 8,099,883,610.08/109,368.40
  6. Step 6: Final answer
    x = 74,060.55

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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.