Home / 56,431.22-77,870.78-30,933.50

Finding the Fourth Proportional to 56,431.22, 77,870.78 and 30,933.50

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Solution

The fourth proportional to 56,431.22, 77,870.78 and 30,933.50 is: 42,685.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,431.22 : 77,870.78 = 30,933.50 : x
  2. Step 2: Convert to fraction form
    56,431.22/77,870.78 = 30,933.50/x
  3. Step 3: Cross multiply
    56,431.22x = 77,870.78 × 30,933.50
  4. Step 4: Simplify right side
    56,431.22x = 2,408,815,773.13
  5. Step 5: Solve for x
    x = 2,408,815,773.13/56,431.22
  6. Step 6: Final answer
    x = 42,685.87

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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.