Home / 68,389.04-102,587.20-21,638.32

Finding the Fourth Proportional to 68,389.04, 102,587.20 and 21,638.32

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Solution

The fourth proportional to 68,389.04, 102,587.20 and 21,638.32 is: 32,458.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,389.04 : 102,587.20 = 21,638.32 : x
  2. Step 2: Convert to fraction form
    68,389.04/102,587.20 = 21,638.32/x
  3. Step 3: Cross multiply
    68,389.04x = 102,587.20 × 21,638.32
  4. Step 4: Simplify right side
    68,389.04x = 2,219,814,661.50
  5. Step 5: Solve for x
    x = 2,219,814,661.50/68,389.04
  6. Step 6: Final answer
    x = 32,458.63

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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.