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Finding the Fourth Proportional to 70,969.92, 106,454.24 and 21,050.08

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Solution

The fourth proportional to 70,969.92, 106,454.24 and 21,050.08 is: 31,574.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,969.92 : 106,454.24 = 21,050.08 : x
  2. Step 2: Convert to fraction form
    70,969.92/106,454.24 = 21,050.08/x
  3. Step 3: Cross multiply
    70,969.92x = 106,454.24 × 21,050.08
  4. Step 4: Simplify right side
    70,969.92x = 2,240,870,268.34
  5. Step 5: Solve for x
    x = 2,240,870,268.34/70,969.92
  6. Step 6: Final answer
    x = 31,574.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.