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Finding the Fourth Proportional to 64,643.40, 96,809.58 and 43,803.72

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Solution

The fourth proportional to 64,643.40, 96,809.58 and 43,803.72 is: 65,600.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,643.40 : 96,809.58 = 43,803.72 : x
  2. Step 2: Convert to fraction form
    64,643.40/96,809.58 = 43,803.72/x
  3. Step 3: Cross multiply
    64,643.40x = 96,809.58 × 43,803.72
  4. Step 4: Simplify right side
    64,643.40x = 4,240,619,735.64
  5. Step 5: Solve for x
    x = 4,240,619,735.64/64,643.40
  6. Step 6: Final answer
    x = 65,600.20

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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.