Home / 85,100.78-127,666.40-28,937.97

Finding the Fourth Proportional to 85,100.78, 127,666.40 and 28,937.97

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Solution

The fourth proportional to 85,100.78, 127,666.40 and 28,937.97 is: 43,412.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,100.78 : 127,666.40 = 28,937.97 : x
  2. Step 2: Convert to fraction form
    85,100.78/127,666.40 = 28,937.97/x
  3. Step 3: Cross multiply
    85,100.78x = 127,666.40 × 28,937.97
  4. Step 4: Simplify right side
    85,100.78x = 3,694,406,308.52
  5. Step 5: Solve for x
    x = 3,694,406,308.52/85,100.78
  6. Step 6: Final answer
    x = 43,412.13

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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.