Home / 56,720.10-78,276.33-31,571.22

Finding the Fourth Proportional to 56,720.10, 78,276.33 and 31,571.22

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Solution

The fourth proportional to 56,720.10, 78,276.33 and 31,571.22 is: 43,569.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,720.10 : 78,276.33 = 31,571.22 : x
  2. Step 2: Convert to fraction form
    56,720.10/78,276.33 = 31,571.22/x
  3. Step 3: Cross multiply
    56,720.10x = 78,276.33 × 31,571.22
  4. Step 4: Simplify right side
    56,720.10x = 2,471,279,235.22
  5. Step 5: Solve for x
    x = 2,471,279,235.22/56,720.10
  6. Step 6: Final answer
    x = 43,569.73

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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.