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Finding the Fourth Proportional to 71,368.36, 98,488.44 and 39,539.28

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Solution

The fourth proportional to 71,368.36, 98,488.44 and 39,539.28 is: 54,564.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,368.36 : 98,488.44 = 39,539.28 : x
  2. Step 2: Convert to fraction form
    71,368.36/98,488.44 = 39,539.28/x
  3. Step 3: Cross multiply
    71,368.36x = 98,488.44 × 39,539.28
  4. Step 4: Simplify right side
    71,368.36x = 3,894,162,005.92
  5. Step 5: Solve for x
    x = 3,894,162,005.92/71,368.36
  6. Step 6: Final answer
    x = 54,564.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.