Home / 66,289.19-99,412.63-21,907.67

Finding the Fourth Proportional to 66,289.19, 99,412.63 and 21,907.67

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Solution

The fourth proportional to 66,289.19, 99,412.63 and 21,907.67 is: 32,854.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,289.19 : 99,412.63 = 21,907.67 : x
  2. Step 2: Convert to fraction form
    66,289.19/99,412.63 = 21,907.67/x
  3. Step 3: Cross multiply
    66,289.19x = 99,412.63 × 21,907.67
  4. Step 4: Simplify right side
    66,289.19x = 2,177,898,540.04
  5. Step 5: Solve for x
    x = 2,177,898,540.04/66,289.19
  6. Step 6: Final answer
    x = 32,854.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.