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Finding the Fourth Proportional to 40,697.78, 61,047.48 and 18,495.68

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Solution

The fourth proportional to 40,697.78, 61,047.48 and 18,495.68 is: 27,743.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,697.78 : 61,047.48 = 18,495.68 : x
  2. Step 2: Convert to fraction form
    40,697.78/61,047.48 = 18,495.68/x
  3. Step 3: Cross multiply
    40,697.78x = 61,047.48 × 18,495.68
  4. Step 4: Simplify right side
    40,697.78x = 1,129,114,654.89
  5. Step 5: Solve for x
    x = 1,129,114,654.89/40,697.78
  6. Step 6: Final answer
    x = 27,743.89

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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.