Home / 65,778.48-98,668.92-21,405.06

Finding the Fourth Proportional to 65,778.48, 98,668.92 and 21,405.06

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Solution

The fourth proportional to 65,778.48, 98,668.92 and 21,405.06 is: 32,107.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,778.48 : 98,668.92 = 21,405.06 : x
  2. Step 2: Convert to fraction form
    65,778.48/98,668.92 = 21,405.06/x
  3. Step 3: Cross multiply
    65,778.48x = 98,668.92 × 21,405.06
  4. Step 4: Simplify right side
    65,778.48x = 2,112,014,152.74
  5. Step 5: Solve for x
    x = 2,112,014,152.74/65,778.48
  6. Step 6: Final answer
    x = 32,107.98

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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.