Home / 55,914.11-77,160.70-30,420.18

Finding the Fourth Proportional to 55,914.11, 77,160.70 and 30,420.18

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Solution

The fourth proportional to 55,914.11, 77,160.70 and 30,420.18 is: 41,979.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,914.11 : 77,160.70 = 30,420.18 : x
  2. Step 2: Convert to fraction form
    55,914.11/77,160.70 = 30,420.18/x
  3. Step 3: Cross multiply
    55,914.11x = 77,160.70 × 30,420.18
  4. Step 4: Simplify right side
    55,914.11x = 2,347,242,637.97
  5. Step 5: Solve for x
    x = 2,347,242,637.97/55,914.11
  6. Step 6: Final answer
    x = 41,979.43

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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.