Home / 78,724,046.72-108,660,792.66-45,694,936.79

Finding the Fourth Proportional to 78,724,046.72, 108,660,792.66 and 45,694,936.79

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Solution

The fourth proportional to 78,724,046.72, 108,660,792.66 and 45,694,936.79 is: 63,071,555.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,724,046.72 : 108,660,792.66 = 45,694,936.79 : x
  2. Step 2: Convert to fraction form
    78,724,046.72/108,660,792.66 = 45,694,936.79/x
  3. Step 3: Cross multiply
    78,724,046.72x = 108,660,792.66 × 45,694,936.79
  4. Step 4: Simplify right side
    78,724,046.72x = 4,965,248,051,606,691
  5. Step 5: Solve for x
    x = 4,965,248,051,606,691/78,724,046.72
  6. Step 6: Final answer
    x = 63,071,555.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.