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Finding the Fourth Proportional to 70,311, 97,040.70 and 40,520.28

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Solution

The fourth proportional to 70,311, 97,040.70 and 40,520.28 is: 55,924.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,311 : 97,040.70 = 40,520.28 : x
  2. Step 2: Convert to fraction form
    70,311/97,040.70 = 40,520.28/x
  3. Step 3: Cross multiply
    70,311x = 97,040.70 × 40,520.28
  4. Step 4: Simplify right side
    70,311x = 3,932,116,335.40
  5. Step 5: Solve for x
    x = 3,932,116,335.40/70,311
  6. Step 6: Final answer
    x = 55,924.63

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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.