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Finding the Fourth Proportional to 39,060.93, 53,904.04 and 21,156.01

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Solution

The fourth proportional to 39,060.93, 53,904.04 and 21,156.01 is: 29,195.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,060.93 : 53,904.04 = 21,156.01 : x
  2. Step 2: Convert to fraction form
    39,060.93/53,904.04 = 21,156.01/x
  3. Step 3: Cross multiply
    39,060.93x = 53,904.04 × 21,156.01
  4. Step 4: Simplify right side
    39,060.93x = 1,140,394,409.28
  5. Step 5: Solve for x
    x = 1,140,394,409.28/39,060.93
  6. Step 6: Final answer
    x = 29,195.27

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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.