Home / 80,880.76-121,337.54-28,327.15

Finding the Fourth Proportional to 80,880.76, 121,337.54 and 28,327.15

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Solution

The fourth proportional to 80,880.76, 121,337.54 and 28,327.15 is: 42,496.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,880.76 : 121,337.54 = 28,327.15 : x
  2. Step 2: Convert to fraction form
    80,880.76/121,337.54 = 28,327.15/x
  3. Step 3: Cross multiply
    80,880.76x = 121,337.54 × 28,327.15
  4. Step 4: Simplify right side
    80,880.76x = 3,437,146,696.21
  5. Step 5: Solve for x
    x = 3,437,146,696.21/80,880.76
  6. Step 6: Final answer
    x = 42,496.47

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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.