Home / 74,678.09-102,986.53-54,503.01

Finding the Fourth Proportional to 74,678.09, 102,986.53 and 54,503.01

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Solution

The fourth proportional to 74,678.09, 102,986.53 and 54,503.01 is: 75,163.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,678.09 : 102,986.53 = 54,503.01 : x
  2. Step 2: Convert to fraction form
    74,678.09/102,986.53 = 54,503.01/x
  3. Step 3: Cross multiply
    74,678.09x = 102,986.53 × 54,503.01
  4. Step 4: Simplify right side
    74,678.09x = 5,613,075,738.20
  5. Step 5: Solve for x
    x = 5,613,075,738.20/74,678.09
  6. Step 6: Final answer
    x = 75,163.63

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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.