Home / 74,072.04-102,219.70-68,421.22

Finding the Fourth Proportional to 74,072.04, 102,219.70 and 68,421.22

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Solution

The fourth proportional to 74,072.04, 102,219.70 and 68,421.22 is: 94,421.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,072.04 : 102,219.70 = 68,421.22 : x
  2. Step 2: Convert to fraction form
    74,072.04/102,219.70 = 68,421.22/x
  3. Step 3: Cross multiply
    74,072.04x = 102,219.70 × 68,421.22
  4. Step 4: Simplify right side
    74,072.04x = 6,993,996,582.03
  5. Step 5: Solve for x
    x = 6,993,996,582.03/74,072.04
  6. Step 6: Final answer
    x = 94,421.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.