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Finding the Fourth Proportional to 55,316, 76,336.08 and 30,165.56

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Solution

The fourth proportional to 55,316, 76,336.08 and 30,165.56 is: 41,628.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,316 : 76,336.08 = 30,165.56 : x
  2. Step 2: Convert to fraction form
    55,316/76,336.08 = 30,165.56/x
  3. Step 3: Cross multiply
    55,316x = 76,336.08 × 30,165.56
  4. Step 4: Simplify right side
    55,316x = 2,302,720,601.40
  5. Step 5: Solve for x
    x = 2,302,720,601.40/55,316
  6. Step 6: Final answer
    x = 41,628.47

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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.