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Finding the Fourth Proportional to 71,574.56, 98,762.24 and 39,743.68

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Solution

The fourth proportional to 71,574.56, 98,762.24 and 39,743.68 is: 54,840.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,574.56 : 98,762.24 = 39,743.68 : x
  2. Step 2: Convert to fraction form
    71,574.56/98,762.24 = 39,743.68/x
  3. Step 3: Cross multiply
    71,574.56x = 98,762.24 × 39,743.68
  4. Step 4: Simplify right side
    71,574.56x = 3,925,174,862.64
  5. Step 5: Solve for x
    x = 3,925,174,862.64/71,574.56
  6. Step 6: Final answer
    x = 54,840.36

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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.