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Finding the Fourth Proportional to 70,518.71, 97,324.43 and 40,305.31

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Solution

The fourth proportional to 70,518.71, 97,324.43 and 40,305.31 is: 55,626.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,518.71 : 97,324.43 = 40,305.31 : x
  2. Step 2: Convert to fraction form
    70,518.71/97,324.43 = 40,305.31/x
  3. Step 3: Cross multiply
    70,518.71x = 97,324.43 × 40,305.31
  4. Step 4: Simplify right side
    70,518.71x = 3,922,690,633.57
  5. Step 5: Solve for x
    x = 3,922,690,633.57/70,518.71
  6. Step 6: Final answer
    x = 55,626.24

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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.