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Finding the Fourth Proportional to 61,406.40, 92,109.60 and 60,369.60

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Solution

The fourth proportional to 61,406.40, 92,109.60 and 60,369.60 is: 90,554.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,406.40 : 92,109.60 = 60,369.60 : x
  2. Step 2: Convert to fraction form
    61,406.40/92,109.60 = 60,369.60/x
  3. Step 3: Cross multiply
    61,406.40x = 92,109.60 × 60,369.60
  4. Step 4: Simplify right side
    61,406.40x = 5,560,619,708.16
  5. Step 5: Solve for x
    x = 5,560,619,708.16/61,406.40
  6. Step 6: Final answer
    x = 90,554.40

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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.