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Finding the Fourth Proportional to 74,487.40, 104,420.60 and 74,487.40

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Solution

The fourth proportional to 74,487.40, 104,420.60 and 74,487.40 is: 104,420.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,487.40 : 104,420.60 = 74,487.40 : x
  2. Step 2: Convert to fraction form
    74,487.40/104,420.60 = 74,487.40/x
  3. Step 3: Cross multiply
    74,487.40x = 104,420.60 × 74,487.40
  4. Step 4: Simplify right side
    74,487.40x = 7,778,019,000.44
  5. Step 5: Solve for x
    x = 7,778,019,000.44/74,487.40
  6. Step 6: Final answer
    x = 104,420.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.