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Finding the Fourth Proportional to 68,445.60, 102,668.40 and 31,005.60

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Solution

The fourth proportional to 68,445.60, 102,668.40 and 31,005.60 is: 46,508.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,445.60 : 102,668.40 = 31,005.60 : x
  2. Step 2: Convert to fraction form
    68,445.60/102,668.40 = 31,005.60/x
  3. Step 3: Cross multiply
    68,445.60x = 102,668.40 × 31,005.60
  4. Step 4: Simplify right side
    68,445.60x = 3,183,295,343.04
  5. Step 5: Solve for x
    x = 3,183,295,343.04/68,445.60
  6. Step 6: Final answer
    x = 46,508.40

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1.5x scale

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.