Home / 80,923.86-121,423.32-30,987.36

Finding the Fourth Proportional to 80,923.86, 121,423.32 and 30,987.36

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Solution

The fourth proportional to 80,923.86, 121,423.32 and 30,987.36 is: 46,495.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,923.86 : 121,423.32 = 30,987.36 : x
  2. Step 2: Convert to fraction form
    80,923.86/121,423.32 = 30,987.36/x
  3. Step 3: Cross multiply
    80,923.86x = 121,423.32 × 30,987.36
  4. Step 4: Simplify right side
    80,923.86x = 3,762,588,129.24
  5. Step 5: Solve for x
    x = 3,762,588,129.24/80,923.86
  6. Step 6: Final answer
    x = 46,495.41

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1.5x scale

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.