Home / 56,571.75-78,071.49-31,421.25

Finding the Fourth Proportional to 56,571.75, 78,071.49 and 31,421.25

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Solution

The fourth proportional to 56,571.75, 78,071.49 and 31,421.25 is: 43,362.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,571.75 : 78,071.49 = 31,421.25 : x
  2. Step 2: Convert to fraction form
    56,571.75/78,071.49 = 31,421.25/x
  3. Step 3: Cross multiply
    56,571.75x = 78,071.49 × 31,421.25
  4. Step 4: Simplify right side
    56,571.75x = 2,453,103,805.16
  5. Step 5: Solve for x
    x = 2,453,103,805.16/56,571.75
  6. Step 6: Final answer
    x = 43,362.70

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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.