Home / 68,045.60-102,056.85-20,649.26

Finding the Fourth Proportional to 68,045.60, 102,056.85 and 20,649.26

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Solution

The fourth proportional to 68,045.60, 102,056.85 and 20,649.26 is: 30,970.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,045.60 : 102,056.85 = 20,649.26 : x
  2. Step 2: Convert to fraction form
    68,045.60/102,056.85 = 20,649.26/x
  3. Step 3: Cross multiply
    68,045.60x = 102,056.85 × 20,649.26
  4. Step 4: Simplify right side
    68,045.60x = 2,107,398,685.57
  5. Step 5: Solve for x
    x = 2,107,398,685.57/68,045.60
  6. Step 6: Final answer
    x = 30,970.39

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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.