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Finding the Fourth Proportional to 86,816.64, 130,050.24 and 65,792.64

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Solution

The fourth proportional to 86,816.64, 130,050.24 and 65,792.64 is: 98,556.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,816.64 : 130,050.24 = 65,792.64 : x
  2. Step 2: Convert to fraction form
    86,816.64/130,050.24 = 65,792.64/x
  3. Step 3: Cross multiply
    86,816.64x = 130,050.24 × 65,792.64
  4. Step 4: Simplify right side
    86,816.64x = 8,556,348,622.23
  5. Step 5: Solve for x
    x = 8,556,348,622.23/86,816.64
  6. Step 6: Final answer
    x = 98,556.55

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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.