Home / 68,570.10-102,862.53-21,812.04

Finding the Fourth Proportional to 68,570.10, 102,862.53 and 21,812.04

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Solution

The fourth proportional to 68,570.10, 102,862.53 and 21,812.04 is: 32,720.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,570.10 : 102,862.53 = 21,812.04 : x
  2. Step 2: Convert to fraction form
    68,570.10/102,862.53 = 21,812.04/x
  3. Step 3: Cross multiply
    68,570.10x = 102,862.53 × 21,812.04
  4. Step 4: Simplify right side
    68,570.10x = 2,243,641,618.86
  5. Step 5: Solve for x
    x = 2,243,641,618.86/68,570.10
  6. Step 6: Final answer
    x = 32,720.41

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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.