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Finding the Fourth Proportional to 70,989.44, 97,959.68 and 40,765.12

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Solution

The fourth proportional to 70,989.44, 97,959.68 and 40,765.12 is: 56,252.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,989.44 : 97,959.68 = 40,765.12 : x
  2. Step 2: Convert to fraction form
    70,989.44/97,959.68 = 40,765.12/x
  3. Step 3: Cross multiply
    70,989.44x = 97,959.68 × 40,765.12
  4. Step 4: Simplify right side
    70,989.44x = 3,993,338,110.36
  5. Step 5: Solve for x
    x = 3,993,338,110.36/70,989.44
  6. Step 6: Final answer
    x = 56,252.57

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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.