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Finding the Fourth Proportional to 68,532,203.60, 102,798,305.40 and 65,508,894.80

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Solution

The fourth proportional to 68,532,203.60, 102,798,305.40 and 65,508,894.80 is: 98,263,342.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,532,203.60 : 102,798,305.40 = 65,508,894.80 : x
  2. Step 2: Convert to fraction form
    68,532,203.60/102,798,305.40 = 65,508,894.80/x
  3. Step 3: Cross multiply
    68,532,203.60x = 102,798,305.40 × 65,508,894.80
  4. Step 4: Simplify right side
    68,532,203.60x = 6,734,203,374,066,872
  5. Step 5: Solve for x
    x = 6,734,203,374,066,872/68,532,203.60
  6. Step 6: Final answer
    x = 98,263,342.20

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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.