Home / 80,740.49-121,118.99-30,862.57

Finding the Fourth Proportional to 80,740.49, 121,118.99 and 30,862.57

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Solution

The fourth proportional to 80,740.49, 121,118.99 and 30,862.57 is: 46,297.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,740.49 : 121,118.99 = 30,862.57 : x
  2. Step 2: Convert to fraction form
    80,740.49/121,118.99 = 30,862.57/x
  3. Step 3: Cross multiply
    80,740.49x = 121,118.99 × 30,862.57
  4. Step 4: Simplify right side
    80,740.49x = 3,738,043,307.20
  5. Step 5: Solve for x
    x = 3,738,043,307.20/80,740.49
  6. Step 6: Final answer
    x = 46,297.01

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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.