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Finding the Fourth Proportional to 64,843.99, 89,426.49 and 55,318.24

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Solution

The fourth proportional to 64,843.99, 89,426.49 and 55,318.24 is: 76,289.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,843.99 : 89,426.49 = 55,318.24 : x
  2. Step 2: Convert to fraction form
    64,843.99/89,426.49 = 55,318.24/x
  3. Step 3: Cross multiply
    64,843.99x = 89,426.49 × 55,318.24
  4. Step 4: Simplify right side
    64,843.99x = 4,946,916,036.18
  5. Step 5: Solve for x
    x = 4,946,916,036.18/64,843.99
  6. Step 6: Final answer
    x = 76,289.51

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1.5x scale

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.