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Finding the Fourth Proportional to 84,450.92, 126,666.93 and 21,271.01

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Solution

The fourth proportional to 84,450.92, 126,666.93 and 21,271.01 is: 31,904.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,450.92 : 126,666.93 = 21,271.01 : x
  2. Step 2: Convert to fraction form
    84,450.92/126,666.93 = 21,271.01/x
  3. Step 3: Cross multiply
    84,450.92x = 126,666.93 × 21,271.01
  4. Step 4: Simplify right side
    84,450.92x = 2,694,333,851.37
  5. Step 5: Solve for x
    x = 2,694,333,851.37/84,450.92
  6. Step 6: Final answer
    x = 31,904.14

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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.