Home / 76,478,517-114,636,088.62-43,618,338.72

Finding the Fourth Proportional to 76,478,517, 114,636,088.62 and 43,618,338.72

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Solution

The fourth proportional to 76,478,517, 114,636,088.62 and 43,618,338.72 is: 65,380,919.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,478,517 : 114,636,088.62 = 43,618,338.72 : x
  2. Step 2: Convert to fraction form
    76,478,517/114,636,088.62 = 43,618,338.72/x
  3. Step 3: Cross multiply
    76,478,517x = 114,636,088.62 × 43,618,338.72
  4. Step 4: Simplify right side
    76,478,517x = 5,000,235,742,963,097
  5. Step 5: Solve for x
    x = 5,000,235,742,963,097/76,478,517
  6. Step 6: Final answer
    x = 65,380,919.23

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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.