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Finding the Fourth Proportional to 70,185,878.40, 105,278,817.60 and 36,173,654.40

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Solution

The fourth proportional to 70,185,878.40, 105,278,817.60 and 36,173,654.40 is: 54,260,481.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,185,878.40 : 105,278,817.60 = 36,173,654.40 : x
  2. Step 2: Convert to fraction form
    70,185,878.40/105,278,817.60 = 36,173,654.40/x
  3. Step 3: Cross multiply
    70,185,878.40x = 105,278,817.60 × 36,173,654.40
  4. Step 4: Simplify right side
    70,185,878.40x = 3,808,319,563,503,037
  5. Step 5: Solve for x
    x = 3,808,319,563,503,037/70,185,878.40
  6. Step 6: Final answer
    x = 54,260,481.60

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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.