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Finding the Fourth Proportional to 77,990.40, 116,985.60 and 44,697.60

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Solution

The fourth proportional to 77,990.40, 116,985.60 and 44,697.60 is: 67,046.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,990.40 : 116,985.60 = 44,697.60 : x
  2. Step 2: Convert to fraction form
    77,990.40/116,985.60 = 44,697.60/x
  3. Step 3: Cross multiply
    77,990.40x = 116,985.60 × 44,697.60
  4. Step 4: Simplify right side
    77,990.40x = 5,228,975,554.56
  5. Step 5: Solve for x
    x = 5,228,975,554.56/77,990.40
  6. Step 6: Final answer
    x = 67,046.40

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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.