Home / 55,571.06-76,688.07-30,420.56

Finding the Fourth Proportional to 55,571.06, 76,688.07 and 30,420.56

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Solution

The fourth proportional to 55,571.06, 76,688.07 and 30,420.56 is: 41,980.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,571.06 : 76,688.07 = 30,420.56 : x
  2. Step 2: Convert to fraction form
    55,571.06/76,688.07 = 30,420.56/x
  3. Step 3: Cross multiply
    55,571.06x = 76,688.07 × 30,420.56
  4. Step 4: Simplify right side
    55,571.06x = 2,332,894,112.36
  5. Step 5: Solve for x
    x = 2,332,894,112.36/55,571.06
  6. Step 6: Final answer
    x = 41,980.38

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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.