Home / 80,762.94-121,143.33-28,172.16

Finding the Fourth Proportional to 80,762.94, 121,143.33 and 28,172.16

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Solution

The fourth proportional to 80,762.94, 121,143.33 and 28,172.16 is: 42,257.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,762.94 : 121,143.33 = 28,172.16 : x
  2. Step 2: Convert to fraction form
    80,762.94/121,143.33 = 28,172.16/x
  3. Step 3: Cross multiply
    80,762.94x = 121,143.33 × 28,172.16
  4. Step 4: Simplify right side
    80,762.94x = 3,412,869,275.69
  5. Step 5: Solve for x
    x = 3,412,869,275.69/80,762.94
  6. Step 6: Final answer
    x = 42,257.86

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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.