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Finding the Fourth Proportional to 56,286.65, 77,672.31 and 30,788.27

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Solution

The fourth proportional to 56,286.65, 77,672.31 and 30,788.27 is: 42,486.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,286.65 : 77,672.31 = 30,788.27 : x
  2. Step 2: Convert to fraction form
    56,286.65/77,672.31 = 30,788.27/x
  3. Step 3: Cross multiply
    56,286.65x = 77,672.31 × 30,788.27
  4. Step 4: Simplify right side
    56,286.65x = 2,391,396,051.80
  5. Step 5: Solve for x
    x = 2,391,396,051.80/56,286.65
  6. Step 6: Final answer
    x = 42,486.03

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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.