Home / 81,648,000.40-122,482,498.20-40,728,355.60

Finding the Fourth Proportional to 81,648,000.40, 122,482,498.20 and 40,728,355.60

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Solution

The fourth proportional to 81,648,000.40, 122,482,498.20 and 40,728,355.60 is: 61,097,769.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,648,000.40 : 122,482,498.20 = 40,728,355.60 : x
  2. Step 2: Convert to fraction form
    81,648,000.40/122,482,498.20 = 40,728,355.60/x
  3. Step 3: Cross multiply
    81,648,000.40x = 122,482,498.20 × 40,728,355.60
  4. Step 4: Simplify right side
    81,648,000.40x = 4,988,510,741,465,960
  5. Step 5: Solve for x
    x = 4,988,510,741,465,960/81,648,000.40
  6. Step 6: Final answer
    x = 61,097,769.90

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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.