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Finding the Fourth Proportional to 39,060, 53,903.01 and 21,155.06

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Solution

The fourth proportional to 39,060, 53,903.01 and 21,155.06 is: 29,194.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,060 : 53,903.01 = 21,155.06 : x
  2. Step 2: Convert to fraction form
    39,060/53,903.01 = 21,155.06/x
  3. Step 3: Cross multiply
    39,060x = 53,903.01 × 21,155.06
  4. Step 4: Simplify right side
    39,060x = 1,140,321,141.22
  5. Step 5: Solve for x
    x = 1,140,321,141.22/39,060
  6. Step 6: Final answer
    x = 29,194.09

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.