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Finding the Fourth Proportional to 79,072.46, 109,116.78 and 47,258.90

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Solution

The fourth proportional to 79,072.46, 109,116.78 and 47,258.90 is: 65,215.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,072.46 : 109,116.78 = 47,258.90 : x
  2. Step 2: Convert to fraction form
    79,072.46/109,116.78 = 47,258.90/x
  3. Step 3: Cross multiply
    79,072.46x = 109,116.78 × 47,258.90
  4. Step 4: Simplify right side
    79,072.46x = 5,156,738,994.34
  5. Step 5: Solve for x
    x = 5,156,738,994.34/79,072.46
  6. Step 6: Final answer
    x = 65,215.36

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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.