Home / 38,721.90-57,820.56-30,734.79

Finding the Fourth Proportional to 38,721.90, 57,820.56 and 30,734.79

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Solution

The fourth proportional to 38,721.90, 57,820.56 and 30,734.79 is: 45,894.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,721.90 : 57,820.56 = 30,734.79 : x
  2. Step 2: Convert to fraction form
    38,721.90/57,820.56 = 30,734.79/x
  3. Step 3: Cross multiply
    38,721.90x = 57,820.56 × 30,734.79
  4. Step 4: Simplify right side
    38,721.90x = 1,777,102,848.88
  5. Step 5: Solve for x
    x = 1,777,102,848.88/38,721.90
  6. Step 6: Final answer
    x = 45,894.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.