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Finding the Fourth Proportional to 71,676.02, 98,904.30 and 39,405.33

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Solution

The fourth proportional to 71,676.02, 98,904.30 and 39,405.33 is: 54,374.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,676.02 : 98,904.30 = 39,405.33 : x
  2. Step 2: Convert to fraction form
    71,676.02/98,904.30 = 39,405.33/x
  3. Step 3: Cross multiply
    71,676.02x = 98,904.30 × 39,405.33
  4. Step 4: Simplify right side
    71,676.02x = 3,897,356,432.15
  5. Step 5: Solve for x
    x = 3,897,356,432.15/71,676.02
  6. Step 6: Final answer
    x = 54,374.62

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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.