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Finding the Fourth Proportional to 97,317.60, 145,981.20 and 50,661.60

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Solution

The fourth proportional to 97,317.60, 145,981.20 and 50,661.60 is: 75,994.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,317.60 : 145,981.20 = 50,661.60 : x
  2. Step 2: Convert to fraction form
    97,317.60/145,981.20 = 50,661.60/x
  3. Step 3: Cross multiply
    97,317.60x = 145,981.20 × 50,661.60
  4. Step 4: Simplify right side
    97,317.60x = 7,395,641,161.92
  5. Step 5: Solve for x
    x = 7,395,641,161.92/97,317.60
  6. Step 6: Final answer
    x = 75,994.90

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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.