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Finding the Fourth Proportional to 70,619.88, 97,450.02 and 38,790.84

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Solution

The fourth proportional to 70,619.88, 97,450.02 and 38,790.84 is: 53,528.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,619.88 : 97,450.02 = 38,790.84 : x
  2. Step 2: Convert to fraction form
    70,619.88/97,450.02 = 38,790.84/x
  3. Step 3: Cross multiply
    70,619.88x = 97,450.02 × 38,790.84
  4. Step 4: Simplify right side
    70,619.88x = 3,780,168,133.82
  5. Step 5: Solve for x
    x = 3,780,168,133.82/70,619.88
  6. Step 6: Final answer
    x = 53,528.39

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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.