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Finding the Fourth Proportional to 80,718.93, 111,392.55 and 48,865.14

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Solution

The fourth proportional to 80,718.93, 111,392.55 and 48,865.14 is: 67,434.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,718.93 : 111,392.55 = 48,865.14 : x
  2. Step 2: Convert to fraction form
    80,718.93/111,392.55 = 48,865.14/x
  3. Step 3: Cross multiply
    80,718.93x = 111,392.55 × 48,865.14
  4. Step 4: Simplify right side
    80,718.93x = 5,443,212,550.71
  5. Step 5: Solve for x
    x = 5,443,212,550.71/80,718.93
  6. Step 6: Final answer
    x = 67,434.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.