Home / 40,161.86-55,429.89-38,390.12

Finding the Fourth Proportional to 40,161.86, 55,429.89 and 38,390.12

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Solution

The fourth proportional to 40,161.86, 55,429.89 and 38,390.12 is: 52,984.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,161.86 : 55,429.89 = 38,390.12 : x
  2. Step 2: Convert to fraction form
    40,161.86/55,429.89 = 38,390.12/x
  3. Step 3: Cross multiply
    40,161.86x = 55,429.89 × 38,390.12
  4. Step 4: Simplify right side
    40,161.86x = 2,127,960,128.69
  5. Step 5: Solve for x
    x = 2,127,960,128.69/40,161.86
  6. Step 6: Final answer
    x = 52,984.60

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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.