Home / 80,851.24-121,272.74-30,927.50

Finding the Fourth Proportional to 80,851.24, 121,272.74 and 30,927.50

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Solution

The fourth proportional to 80,851.24, 121,272.74 and 30,927.50 is: 46,389.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,851.24 : 121,272.74 = 30,927.50 : x
  2. Step 2: Convert to fraction form
    80,851.24/121,272.74 = 30,927.50/x
  3. Step 3: Cross multiply
    80,851.24x = 121,272.74 × 30,927.50
  4. Step 4: Simplify right side
    80,851.24x = 3,750,662,666.35
  5. Step 5: Solve for x
    x = 3,750,662,666.35/80,851.24
  6. Step 6: Final answer
    x = 46,389.67

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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.