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Finding the Fourth Proportional to 54,978,062.65, 75,867,647.80 and 30,533,351.29

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Solution

The fourth proportional to 54,978,062.65, 75,867,647.80 and 30,533,351.29 is: 42,134,870.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,978,062.65 : 75,867,647.80 = 30,533,351.29 : x
  2. Step 2: Convert to fraction form
    54,978,062.65/75,867,647.80 = 30,533,351.29/x
  3. Step 3: Cross multiply
    54,978,062.65x = 75,867,647.80 × 30,533,351.29
  4. Step 4: Simplify right side
    54,978,062.65x = 2,316,493,541,823,395.50
  5. Step 5: Solve for x
    x = 2,316,493,541,823,395.50/54,978,062.65
  6. Step 6: Final answer
    x = 42,134,870.35

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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.