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Finding the Fourth Proportional to 84,857.69, 127,302.93 and 28,706.93

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Solution

The fourth proportional to 84,857.69, 127,302.93 and 28,706.93 is: 43,065.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,857.69 : 127,302.93 = 28,706.93 : x
  2. Step 2: Convert to fraction form
    84,857.69/127,302.93 = 28,706.93/x
  3. Step 3: Cross multiply
    84,857.69x = 127,302.93 × 28,706.93
  4. Step 4: Simplify right side
    84,857.69x = 3,654,476,300.30
  5. Step 5: Solve for x
    x = 3,654,476,300.30/84,857.69
  6. Step 6: Final answer
    x = 43,065.94

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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.