Home / 74,872.54-112,308.36-18,712.36

Finding the Fourth Proportional to 74,872.54, 112,308.36 and 18,712.36

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Solution

The fourth proportional to 74,872.54, 112,308.36 and 18,712.36 is: 28,068.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,872.54 : 112,308.36 = 18,712.36 : x
  2. Step 2: Convert to fraction form
    74,872.54/112,308.36 = 18,712.36/x
  3. Step 3: Cross multiply
    74,872.54x = 112,308.36 × 18,712.36
  4. Step 4: Simplify right side
    74,872.54x = 2,101,554,463.33
  5. Step 5: Solve for x
    x = 2,101,554,463.33/74,872.54
  6. Step 6: Final answer
    x = 28,068.43

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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.