Home / 55,653.48-83,485.38-20,123.70

Finding the Fourth Proportional to 55,653.48, 83,485.38 and 20,123.70

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Solution

The fourth proportional to 55,653.48, 83,485.38 and 20,123.70 is: 30,187.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,653.48 : 83,485.38 = 20,123.70 : x
  2. Step 2: Convert to fraction form
    55,653.48/83,485.38 = 20,123.70/x
  3. Step 3: Cross multiply
    55,653.48x = 83,485.38 × 20,123.70
  4. Step 4: Simplify right side
    55,653.48x = 1,680,034,741.51
  5. Step 5: Solve for x
    x = 1,680,034,741.51/55,653.48
  6. Step 6: Final answer
    x = 30,187.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.