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Finding the Fourth Proportional to 71,522.60, 98,698.40 and 39,693.54

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Solution

The fourth proportional to 71,522.60, 98,698.40 and 39,693.54 is: 54,775.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,522.60 : 98,698.40 = 39,693.54 : x
  2. Step 2: Convert to fraction form
    71,522.60/98,698.40 = 39,693.54/x
  3. Step 3: Cross multiply
    71,522.60x = 98,698.40 × 39,693.54
  4. Step 4: Simplify right side
    71,522.60x = 3,917,689,208.84
  5. Step 5: Solve for x
    x = 3,917,689,208.84/71,522.60
  6. Step 6: Final answer
    x = 54,775.55

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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.