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Finding the Fourth Proportional to 115,969.60, 173,970.60 and 49,409.20

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Solution

The fourth proportional to 115,969.60, 173,970.60 and 49,409.20 is: 74,120.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,969.60 : 173,970.60 = 49,409.20 : x
  2. Step 2: Convert to fraction form
    115,969.60/173,970.60 = 49,409.20/x
  3. Step 3: Cross multiply
    115,969.60x = 173,970.60 × 49,409.20
  4. Step 4: Simplify right side
    115,969.60x = 8,595,748,169.52
  5. Step 5: Solve for x
    x = 8,595,748,169.52/115,969.60
  6. Step 6: Final answer
    x = 74,120.70

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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.