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Finding the Fourth Proportional to 72,189.63, 108,242.88 and 27,810.60

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Solution

The fourth proportional to 72,189.63, 108,242.88 and 27,810.60 is: 41,699.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,189.63 : 108,242.88 = 27,810.60 : x
  2. Step 2: Convert to fraction form
    72,189.63/108,242.88 = 27,810.60/x
  3. Step 3: Cross multiply
    72,189.63x = 108,242.88 × 27,810.60
  4. Step 4: Simplify right side
    72,189.63x = 3,010,299,438.53
  5. Step 5: Solve for x
    x = 3,010,299,438.53/72,189.63
  6. Step 6: Final answer
    x = 41,699.89

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1.5x scale

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.