Home / 9,528,975.78-13,149,976.44-5,178,051.72

Finding the Fourth Proportional to 9,528,975.78, 13,149,976.44 and 5,178,051.72

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Solution

The fourth proportional to 9,528,975.78, 13,149,976.44 and 5,178,051.72 is: 7,145,705.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,528,975.78 : 13,149,976.44 = 5,178,051.72 : x
  2. Step 2: Convert to fraction form
    9,528,975.78/13,149,976.44 = 5,178,051.72/x
  3. Step 3: Cross multiply
    9,528,975.78x = 13,149,976.44 × 5,178,051.72
  4. Step 4: Simplify right side
    9,528,975.78x = 68,091,258,123,101.47
  5. Step 5: Solve for x
    x = 68,091,258,123,101.47/9,528,975.78
  6. Step 6: Final answer
    x = 7,145,705.87

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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.