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Finding the Fourth Proportional to 71,007.08, 106,328.40 and 68,904.80

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Solution

The fourth proportional to 71,007.08, 106,328.40 and 68,904.80 is: 103,180.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,007.08 : 106,328.40 = 68,904.80 : x
  2. Step 2: Convert to fraction form
    71,007.08/106,328.40 = 68,904.80/x
  3. Step 3: Cross multiply
    71,007.08x = 106,328.40 × 68,904.80
  4. Step 4: Simplify right side
    71,007.08x = 7,326,537,136.32
  5. Step 5: Solve for x
    x = 7,326,537,136.32/71,007.08
  6. Step 6: Final answer
    x = 103,180.37

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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.