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Finding the Fourth Proportional to 71,525.88, 98,707.32 and 39,694.32

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Solution

The fourth proportional to 71,525.88, 98,707.32 and 39,694.32 is: 54,779.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,525.88 : 98,707.32 = 39,694.32 : x
  2. Step 2: Convert to fraction form
    71,525.88/98,707.32 = 39,694.32/x
  3. Step 3: Cross multiply
    71,525.88x = 98,707.32 × 39,694.32
  4. Step 4: Simplify right side
    71,525.88x = 3,918,119,946.42
  5. Step 5: Solve for x
    x = 3,918,119,946.42/71,525.88
  6. Step 6: Final answer
    x = 54,779.05

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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.