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Finding the Fourth Proportional to 68,898,129.60, 103,347,194.40 and 34,460,752.80

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Solution

The fourth proportional to 68,898,129.60, 103,347,194.40 and 34,460,752.80 is: 51,691,129.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,898,129.60 : 103,347,194.40 = 34,460,752.80 : x
  2. Step 2: Convert to fraction form
    68,898,129.60/103,347,194.40 = 34,460,752.80/x
  3. Step 3: Cross multiply
    68,898,129.60x = 103,347,194.40 × 34,460,752.80
  4. Step 4: Simplify right side
    68,898,129.60x = 3,561,422,118,791,944
  5. Step 5: Solve for x
    x = 3,561,422,118,791,944/68,898,129.60
  6. Step 6: Final answer
    x = 51,691,129.20

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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.