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Finding the Fourth Proportional to 109,038.60, 163,584.90 and 49,861.80

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Solution

The fourth proportional to 109,038.60, 163,584.90 and 49,861.80 is: 74,805.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,038.60 : 163,584.90 = 49,861.80 : x
  2. Step 2: Convert to fraction form
    109,038.60/163,584.90 = 49,861.80/x
  3. Step 3: Cross multiply
    109,038.60x = 163,584.90 × 49,861.80
  4. Step 4: Simplify right side
    109,038.60x = 8,156,637,566.82
  5. Step 5: Solve for x
    x = 8,156,637,566.82/109,038.60
  6. Step 6: Final answer
    x = 74,805.05

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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.