Home / 54,011.60-74,536.20-30,139.28

Finding the Fourth Proportional to 54,011.60, 74,536.20 and 30,139.28

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Solution

The fourth proportional to 54,011.60, 74,536.20 and 30,139.28 is: 41,592.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,011.60 : 74,536.20 = 30,139.28 : x
  2. Step 2: Convert to fraction form
    54,011.60/74,536.20 = 30,139.28/x
  3. Step 3: Cross multiply
    54,011.60x = 74,536.20 × 30,139.28
  4. Step 4: Simplify right side
    54,011.60x = 2,246,467,401.94
  5. Step 5: Solve for x
    x = 2,246,467,401.94/54,011.60
  6. Step 6: Final answer
    x = 41,592.31

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1.5x scale

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.