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Finding the Fourth Proportional to 77,300.80, 115,816.80 and 35,662.40

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Solution

The fourth proportional to 77,300.80, 115,816.80 and 35,662.40 is: 53,431.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,300.80 : 115,816.80 = 35,662.40 : x
  2. Step 2: Convert to fraction form
    77,300.80/115,816.80 = 35,662.40/x
  3. Step 3: Cross multiply
    77,300.80x = 115,816.80 × 35,662.40
  4. Step 4: Simplify right side
    77,300.80x = 4,130,305,048.32
  5. Step 5: Solve for x
    x = 4,130,305,048.32/77,300.80
  6. Step 6: Final answer
    x = 53,431.60

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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.