Home / 68,431.02-102,646.53-21,680.25

Finding the Fourth Proportional to 68,431.02, 102,646.53 and 21,680.25

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Solution

The fourth proportional to 68,431.02, 102,646.53 and 21,680.25 is: 32,520.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,431.02 : 102,646.53 = 21,680.25 : x
  2. Step 2: Convert to fraction form
    68,431.02/102,646.53 = 21,680.25/x
  3. Step 3: Cross multiply
    68,431.02x = 102,646.53 × 21,680.25
  4. Step 4: Simplify right side
    68,431.02x = 2,225,402,432.03
  5. Step 5: Solve for x
    x = 2,225,402,432.03/68,431.02
  6. Step 6: Final answer
    x = 32,520.38

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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.