Home / 53,979.18-74,471.20-31,305.45

Finding the Fourth Proportional to 53,979.18, 74,471.20 and 31,305.45

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Solution

The fourth proportional to 53,979.18, 74,471.20 and 31,305.45 is: 43,189.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,979.18 : 74,471.20 = 31,305.45 : x
  2. Step 2: Convert to fraction form
    53,979.18/74,471.20 = 31,305.45/x
  3. Step 3: Cross multiply
    53,979.18x = 74,471.20 × 31,305.45
  4. Step 4: Simplify right side
    53,979.18x = 2,331,354,629.04
  5. Step 5: Solve for x
    x = 2,331,354,629.04/53,979.18
  6. Step 6: Final answer
    x = 43,189.89

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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.