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Finding the Fourth Proportional to 74,628.87, 102,995.12 and 55,733.19

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Solution

The fourth proportional to 74,628.87, 102,995.12 and 55,733.19 is: 76,917.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,628.87 : 102,995.12 = 55,733.19 : x
  2. Step 2: Convert to fraction form
    74,628.87/102,995.12 = 55,733.19/x
  3. Step 3: Cross multiply
    74,628.87x = 102,995.12 × 55,733.19
  4. Step 4: Simplify right side
    74,628.87x = 5,740,246,313.37
  5. Step 5: Solve for x
    x = 5,740,246,313.37/74,628.87
  6. Step 6: Final answer
    x = 76,917.23

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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.