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Finding the Fourth Proportional to 73,570.99, 110,338.26 and 20,980.93

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Solution

The fourth proportional to 73,570.99, 110,338.26 and 20,980.93 is: 31,466.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,570.99 : 110,338.26 = 20,980.93 : x
  2. Step 2: Convert to fraction form
    73,570.99/110,338.26 = 20,980.93/x
  3. Step 3: Cross multiply
    73,570.99x = 110,338.26 × 20,980.93
  4. Step 4: Simplify right side
    73,570.99x = 2,314,999,309.38
  5. Step 5: Solve for x
    x = 2,314,999,309.38/73,570.99
  6. Step 6: Final answer
    x = 31,466.20

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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.