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Finding the Fourth Proportional to 70,956.10, 97,914.93 and 40,720.17

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Solution

The fourth proportional to 70,956.10, 97,914.93 and 40,720.17 is: 56,191.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,956.10 : 97,914.93 = 40,720.17 : x
  2. Step 2: Convert to fraction form
    70,956.10/97,914.93 = 40,720.17/x
  3. Step 3: Cross multiply
    70,956.10x = 97,914.93 × 40,720.17
  4. Step 4: Simplify right side
    70,956.10x = 3,987,112,258.85
  5. Step 5: Solve for x
    x = 3,987,112,258.85/70,956.10
  6. Step 6: Final answer
    x = 56,191.25

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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.