Home / 40,161.36-55,429.20-38,389.62

Finding the Fourth Proportional to 40,161.36, 55,429.20 and 38,389.62

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Solution

The fourth proportional to 40,161.36, 55,429.20 and 38,389.62 is: 52,983.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,161.36 : 55,429.20 = 38,389.62 : x
  2. Step 2: Convert to fraction form
    40,161.36/55,429.20 = 38,389.62/x
  3. Step 3: Cross multiply
    40,161.36x = 55,429.20 × 38,389.62
  4. Step 4: Simplify right side
    40,161.36x = 2,127,905,924.90
  5. Step 5: Solve for x
    x = 2,127,905,924.90/40,161.36
  6. Step 6: Final answer
    x = 52,983.91

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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.