Home / 68,154.48-102,235.80-21,407.36

Finding the Fourth Proportional to 68,154.48, 102,235.80 and 21,407.36

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Solution

The fourth proportional to 68,154.48, 102,235.80 and 21,407.36 is: 32,112.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,154.48 : 102,235.80 = 21,407.36 : x
  2. Step 2: Convert to fraction form
    68,154.48/102,235.80 = 21,407.36/x
  3. Step 3: Cross multiply
    68,154.48x = 102,235.80 × 21,407.36
  4. Step 4: Simplify right side
    68,154.48x = 2,188,598,064.31
  5. Step 5: Solve for x
    x = 2,188,598,064.31/68,154.48
  6. Step 6: Final answer
    x = 32,112.31

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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.