Home / 72,918.56-109,374.19-28,553.45

Finding the Fourth Proportional to 72,918.56, 109,374.19 and 28,553.45

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Solution

The fourth proportional to 72,918.56, 109,374.19 and 28,553.45 is: 42,828.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,918.56 : 109,374.19 = 28,553.45 : x
  2. Step 2: Convert to fraction form
    72,918.56/109,374.19 = 28,553.45/x
  3. Step 3: Cross multiply
    72,918.56x = 109,374.19 × 28,553.45
  4. Step 4: Simplify right side
    72,918.56x = 3,123,009,847.20
  5. Step 5: Solve for x
    x = 3,123,009,847.20/72,918.56
  6. Step 6: Final answer
    x = 42,828.74

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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.