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Finding the Fourth Proportional to 68,809,701.60, 103,214,552.40 and 61,377,919.20

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Solution

The fourth proportional to 68,809,701.60, 103,214,552.40 and 61,377,919.20 is: 92,066,878.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,809,701.60 : 103,214,552.40 = 61,377,919.20 : x
  2. Step 2: Convert to fraction form
    68,809,701.60/103,214,552.40 = 61,377,919.20/x
  3. Step 3: Cross multiply
    68,809,701.60x = 103,214,552.40 × 61,377,919.20
  4. Step 4: Simplify right side
    68,809,701.60x = 6,335,094,457,471,367
  5. Step 5: Solve for x
    x = 6,335,094,457,471,367/68,809,701.60
  6. Step 6: Final answer
    x = 92,066,878.80

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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.