Home / 56,634.21-78,155.25-31,140.99

Finding the Fourth Proportional to 56,634.21, 78,155.25 and 31,140.99

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Solution

The fourth proportional to 56,634.21, 78,155.25 and 31,140.99 is: 42,974.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,634.21 : 78,155.25 = 31,140.99 : x
  2. Step 2: Convert to fraction form
    56,634.21/78,155.25 = 31,140.99/x
  3. Step 3: Cross multiply
    56,634.21x = 78,155.25 × 31,140.99
  4. Step 4: Simplify right side
    56,634.21x = 2,433,831,858.70
  5. Step 5: Solve for x
    x = 2,433,831,858.70/56,634.21
  6. Step 6: Final answer
    x = 42,974.59

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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.