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Finding the Fourth Proportional to 69,368.90, 103,992.60 and 47,110.10

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Solution

The fourth proportional to 69,368.90, 103,992.60 and 47,110.10 is: 70,623.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,368.90 : 103,992.60 = 47,110.10 : x
  2. Step 2: Convert to fraction form
    69,368.90/103,992.60 = 47,110.10/x
  3. Step 3: Cross multiply
    69,368.90x = 103,992.60 × 47,110.10
  4. Step 4: Simplify right side
    69,368.90x = 4,899,101,785.26
  5. Step 5: Solve for x
    x = 4,899,101,785.26/69,368.90
  6. Step 6: Final answer
    x = 70,623.89

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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.