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Finding the Fourth Proportional to 84,948.30, 127,458.90 and 43,395.30

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Solution

The fourth proportional to 84,948.30, 127,458.90 and 43,395.30 is: 65,111.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,948.30 : 127,458.90 = 43,395.30 : x
  2. Step 2: Convert to fraction form
    84,948.30/127,458.90 = 43,395.30/x
  3. Step 3: Cross multiply
    84,948.30x = 127,458.90 × 43,395.30
  4. Step 4: Simplify right side
    84,948.30x = 5,531,117,203.17
  5. Step 5: Solve for x
    x = 5,531,117,203.17/84,948.30
  6. Step 6: Final answer
    x = 65,111.57

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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.