Home / 75,020.31-112,552.34-30,638.79

Finding the Fourth Proportional to 75,020.31, 112,552.34 and 30,638.79

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Solution

The fourth proportional to 75,020.31, 112,552.34 and 30,638.79 is: 45,967.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,020.31 : 112,552.34 = 30,638.79 : x
  2. Step 2: Convert to fraction form
    75,020.31/112,552.34 = 30,638.79/x
  3. Step 3: Cross multiply
    75,020.31x = 112,552.34 × 30,638.79
  4. Step 4: Simplify right side
    75,020.31x = 3,448,467,356.07
  5. Step 5: Solve for x
    x = 3,448,467,356.07/75,020.31
  6. Step 6: Final answer
    x = 45,967.12

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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.