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Finding the Fourth Proportional to 83,664, 115,457.13 and 45,939.06

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Solution

The fourth proportional to 83,664, 115,457.13 and 45,939.06 is: 63,396.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,664 : 115,457.13 = 45,939.06 : x
  2. Step 2: Convert to fraction form
    83,664/115,457.13 = 45,939.06/x
  3. Step 3: Cross multiply
    83,664x = 115,457.13 × 45,939.06
  4. Step 4: Simplify right side
    83,664x = 5,303,992,022.50
  5. Step 5: Solve for x
    x = 5,303,992,022.50/83,664
  6. Step 6: Final answer
    x = 63,396.35

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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.