Home / 56,428.25-77,870.57-30,933.90

Finding the Fourth Proportional to 56,428.25, 77,870.57 and 30,933.90

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Solution

The fourth proportional to 56,428.25, 77,870.57 and 30,933.90 is: 42,688.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,428.25 : 77,870.57 = 30,933.90 : x
  2. Step 2: Convert to fraction form
    56,428.25/77,870.57 = 30,933.90/x
  3. Step 3: Cross multiply
    56,428.25x = 77,870.57 × 30,933.90
  4. Step 4: Simplify right side
    56,428.25x = 2,408,840,270.65
  5. Step 5: Solve for x
    x = 2,408,840,270.65/56,428.25
  6. Step 6: Final answer
    x = 42,688.56

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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.