Home / 72,984.81-100,719.05-39,450.81

Finding the Fourth Proportional to 72,984.81, 100,719.05 and 39,450.81

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Solution

The fourth proportional to 72,984.81, 100,719.05 and 39,450.81 is: 54,442.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,984.81 : 100,719.05 = 39,450.81 : x
  2. Step 2: Convert to fraction form
    72,984.81/100,719.05 = 39,450.81/x
  3. Step 3: Cross multiply
    72,984.81x = 100,719.05 × 39,450.81
  4. Step 4: Simplify right side
    72,984.81x = 3,973,448,104.93
  5. Step 5: Solve for x
    x = 3,973,448,104.93/72,984.81
  6. Step 6: Final answer
    x = 54,442.12

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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.