Home / 80,984.81-121,495.55-31,088.41

Finding the Fourth Proportional to 80,984.81, 121,495.55 and 31,088.41

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Solution

The fourth proportional to 80,984.81, 121,495.55 and 31,088.41 is: 46,639.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,984.81 : 121,495.55 = 31,088.41 : x
  2. Step 2: Convert to fraction form
    80,984.81/121,495.55 = 31,088.41/x
  3. Step 3: Cross multiply
    80,984.81x = 121,495.55 × 31,088.41
  4. Step 4: Simplify right side
    80,984.81x = 3,777,103,012.39
  5. Step 5: Solve for x
    x = 3,777,103,012.39/80,984.81
  6. Step 6: Final answer
    x = 46,639.65

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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.