Home / 84,918.08-127,395.12-28,755.47

Finding the Fourth Proportional to 84,918.08, 127,395.12 and 28,755.47

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Solution

The fourth proportional to 84,918.08, 127,395.12 and 28,755.47 is: 43,139.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,918.08 : 127,395.12 = 28,755.47 : x
  2. Step 2: Convert to fraction form
    84,918.08/127,395.12 = 28,755.47/x
  3. Step 3: Cross multiply
    84,918.08x = 127,395.12 × 28,755.47
  4. Step 4: Simplify right side
    84,918.08x = 3,663,306,551.31
  5. Step 5: Solve for x
    x = 3,663,306,551.31/84,918.08
  6. Step 6: Final answer
    x = 43,139.30

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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.