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Finding the Fourth Proportional to 70,409.70, 97,163.28 and 38,577.51

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Solution

The fourth proportional to 70,409.70, 97,163.28 and 38,577.51 is: 53,235.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,409.70 : 97,163.28 = 38,577.51 : x
  2. Step 2: Convert to fraction form
    70,409.70/97,163.28 = 38,577.51/x
  3. Step 3: Cross multiply
    70,409.70x = 97,163.28 × 38,577.51
  4. Step 4: Simplify right side
    70,409.70x = 3,748,317,405.83
  5. Step 5: Solve for x
    x = 3,748,317,405.83/70,409.70
  6. Step 6: Final answer
    x = 53,235.81

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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.