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Finding the Fourth Proportional to 73,258.45, 101,091.78 and 40,987.47

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Solution

The fourth proportional to 73,258.45, 101,091.78 and 40,987.47 is: 56,559.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,258.45 : 101,091.78 = 40,987.47 : x
  2. Step 2: Convert to fraction form
    73,258.45/101,091.78 = 40,987.47/x
  3. Step 3: Cross multiply
    73,258.45x = 101,091.78 × 40,987.47
  4. Step 4: Simplify right side
    73,258.45x = 4,143,496,095.06
  5. Step 5: Solve for x
    x = 4,143,496,095.06/73,258.45
  6. Step 6: Final answer
    x = 56,559.97

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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.