Home / 56,928-78,564.48-31,778.04

Finding the Fourth Proportional to 56,928, 78,564.48 and 31,778.04

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Solution

The fourth proportional to 56,928, 78,564.48 and 31,778.04 is: 43,855.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,928 : 78,564.48 = 31,778.04 : x
  2. Step 2: Convert to fraction form
    56,928/78,564.48 = 31,778.04/x
  3. Step 3: Cross multiply
    56,928x = 78,564.48 × 31,778.04
  4. Step 4: Simplify right side
    56,928x = 2,496,625,188.02
  5. Step 5: Solve for x
    x = 2,496,625,188.02/56,928
  6. Step 6: Final answer
    x = 43,855.84

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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.