Home / 53,120.40-73,318.60-30,458.98

Finding the Fourth Proportional to 53,120.40, 73,318.60 and 30,458.98

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Solution

The fourth proportional to 53,120.40, 73,318.60 and 30,458.98 is: 42,040.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,120.40 : 73,318.60 = 30,458.98 : x
  2. Step 2: Convert to fraction form
    53,120.40/73,318.60 = 30,458.98/x
  3. Step 3: Cross multiply
    53,120.40x = 73,318.60 × 30,458.98
  4. Step 4: Simplify right side
    53,120.40x = 2,233,209,771.03
  5. Step 5: Solve for x
    x = 2,233,209,771.03/53,120.40
  6. Step 6: Final answer
    x = 42,040.53

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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.