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Finding the Fourth Proportional to 71,454.03, 98,606.20 and 39,628.32

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Solution

The fourth proportional to 71,454.03, 98,606.20 and 39,628.32 is: 54,686.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,454.03 : 98,606.20 = 39,628.32 : x
  2. Step 2: Convert to fraction form
    71,454.03/98,606.20 = 39,628.32/x
  3. Step 3: Cross multiply
    71,454.03x = 98,606.20 × 39,628.32
  4. Step 4: Simplify right side
    71,454.03x = 3,907,598,047.58
  5. Step 5: Solve for x
    x = 3,907,598,047.58/71,454.03
  6. Step 6: Final answer
    x = 54,686.88

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1.5x scale

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.