Home / 56,571.64-78,069.36-31,078.57

Finding the Fourth Proportional to 56,571.64, 78,069.36 and 31,078.57

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Solution

The fourth proportional to 56,571.64, 78,069.36 and 31,078.57 is: 42,888.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,571.64 : 78,069.36 = 31,078.57 : x
  2. Step 2: Convert to fraction form
    56,571.64/78,069.36 = 31,078.57/x
  3. Step 3: Cross multiply
    56,571.64x = 78,069.36 × 31,078.57
  4. Step 4: Simplify right side
    56,571.64x = 2,426,284,264.79
  5. Step 5: Solve for x
    x = 2,426,284,264.79/56,571.64
  6. Step 6: Final answer
    x = 42,888.71

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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.