Home / 80,928.62-111,681.99-45,120.92

Finding the Fourth Proportional to 80,928.62, 111,681.99 and 45,120.92

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Solution

The fourth proportional to 80,928.62, 111,681.99 and 45,120.92 is: 62,267.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,928.62 : 111,681.99 = 45,120.92 : x
  2. Step 2: Convert to fraction form
    80,928.62/111,681.99 = 45,120.92/x
  3. Step 3: Cross multiply
    80,928.62x = 111,681.99 × 45,120.92
  4. Step 4: Simplify right side
    80,928.62x = 5,039,194,136.23
  5. Step 5: Solve for x
    x = 5,039,194,136.23/80,928.62
  6. Step 6: Final answer
    x = 62,267.15

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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.