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Finding the Fourth Proportional to 31,779.48, 43,855.02 and 17,631.48

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Solution

The fourth proportional to 31,779.48, 43,855.02 and 17,631.48 is: 24,331.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,779.48 : 43,855.02 = 17,631.48 : x
  2. Step 2: Convert to fraction form
    31,779.48/43,855.02 = 17,631.48/x
  3. Step 3: Cross multiply
    31,779.48x = 43,855.02 × 17,631.48
  4. Step 4: Simplify right side
    31,779.48x = 773,228,908.03
  5. Step 5: Solve for x
    x = 773,228,908.03/31,779.48
  6. Step 6: Final answer
    x = 24,331.07

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1.5x scale

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.