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Finding the Fourth Proportional to 84,812.68, 127,219.02 and 28,653.04

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Solution

The fourth proportional to 84,812.68, 127,219.02 and 28,653.04 is: 42,979.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,812.68 : 127,219.02 = 28,653.04 : x
  2. Step 2: Convert to fraction form
    84,812.68/127,219.02 = 28,653.04/x
  3. Step 3: Cross multiply
    84,812.68x = 127,219.02 × 28,653.04
  4. Step 4: Simplify right side
    84,812.68x = 3,645,211,668.82
  5. Step 5: Solve for x
    x = 3,645,211,668.82/84,812.68
  6. Step 6: Final answer
    x = 42,979.56

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Double scale
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Similar ratio
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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.