Home / 80,880.03-121,237.43-28,246.23

Finding the Fourth Proportional to 80,880.03, 121,237.43 and 28,246.23

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Solution

The fourth proportional to 80,880.03, 121,237.43 and 28,246.23 is: 42,340.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,880.03 : 121,237.43 = 28,246.23 : x
  2. Step 2: Convert to fraction form
    80,880.03/121,237.43 = 28,246.23/x
  3. Step 3: Cross multiply
    80,880.03x = 121,237.43 × 28,246.23
  4. Step 4: Simplify right side
    80,880.03x = 3,424,500,191.16
  5. Step 5: Solve for x
    x = 3,424,500,191.16/80,880.03
  6. Step 6: Final answer
    x = 42,340.49

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Double scale
Find fourth proportional to 80,881.03, 121,238.92 and 28,247.23
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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.