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Finding the Fourth Proportional to 70,619.82, 97,457.07 and 38,790.78

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Solution

The fourth proportional to 70,619.82, 97,457.07 and 38,790.78 is: 53,532.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,619.82 : 97,457.07 = 38,790.78 : x
  2. Step 2: Convert to fraction form
    70,619.82/97,457.07 = 38,790.78/x
  3. Step 3: Cross multiply
    70,619.82x = 97,457.07 × 38,790.78
  4. Step 4: Simplify right side
    70,619.82x = 3,780,435,761.81
  5. Step 5: Solve for x
    x = 3,780,435,761.81/70,619.82
  6. Step 6: Final answer
    x = 53,532.22

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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.