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Finding the Fourth Proportional to 70,755.76, 97,643.76 and 40,540.48

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Solution

The fourth proportional to 70,755.76, 97,643.76 and 40,540.48 is: 55,946.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,755.76 : 97,643.76 = 40,540.48 : x
  2. Step 2: Convert to fraction form
    70,755.76/97,643.76 = 40,540.48/x
  3. Step 3: Cross multiply
    70,755.76x = 97,643.76 × 40,540.48
  4. Step 4: Simplify right side
    70,755.76x = 3,958,524,208.48
  5. Step 5: Solve for x
    x = 3,958,524,208.48/70,755.76
  6. Step 6: Final answer
    x = 55,946.32

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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.