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Finding the Fourth Proportional to 64,703.88, 89,276.58 and 36,399.24

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Solution

The fourth proportional to 64,703.88, 89,276.58 and 36,399.24 is: 50,222.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,703.88 : 89,276.58 = 36,399.24 : x
  2. Step 2: Convert to fraction form
    64,703.88/89,276.58 = 36,399.24/x
  3. Step 3: Cross multiply
    64,703.88x = 89,276.58 × 36,399.24
  4. Step 4: Simplify right side
    64,703.88x = 3,249,599,661.80
  5. Step 5: Solve for x
    x = 3,249,599,661.80/64,703.88
  6. Step 6: Final answer
    x = 50,222.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.