Home / 78,270.13-107,971.41-55,618.28

Finding the Fourth Proportional to 78,270.13, 107,971.41 and 55,618.28

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Solution

The fourth proportional to 78,270.13, 107,971.41 and 55,618.28 is: 76,723.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,270.13 : 107,971.41 = 55,618.28 : x
  2. Step 2: Convert to fraction form
    78,270.13/107,971.41 = 55,618.28/x
  3. Step 3: Cross multiply
    78,270.13x = 107,971.41 × 55,618.28
  4. Step 4: Simplify right side
    78,270.13x = 6,005,184,186.98
  5. Step 5: Solve for x
    x = 6,005,184,186.98/78,270.13
  6. Step 6: Final answer
    x = 76,723.83

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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.