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Finding the Fourth Proportional to 64,351.80, 96,527.70 and 19,978.20

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Solution

The fourth proportional to 64,351.80, 96,527.70 and 19,978.20 is: 29,967.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,351.80 : 96,527.70 = 19,978.20 : x
  2. Step 2: Convert to fraction form
    64,351.80/96,527.70 = 19,978.20/x
  3. Step 3: Cross multiply
    64,351.80x = 96,527.70 × 19,978.20
  4. Step 4: Simplify right side
    64,351.80x = 1,928,449,696.14
  5. Step 5: Solve for x
    x = 1,928,449,696.14/64,351.80
  6. Step 6: Final answer
    x = 29,967.30

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1.5x scale

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.