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Finding the Fourth Proportional to 70,373.37, 105,535.17 and 20,443.08

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Solution

The fourth proportional to 70,373.37, 105,535.17 and 20,443.08 is: 30,657.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,373.37 : 105,535.17 = 20,443.08 : x
  2. Step 2: Convert to fraction form
    70,373.37/105,535.17 = 20,443.08/x
  3. Step 3: Cross multiply
    70,373.37x = 105,535.17 × 20,443.08
  4. Step 4: Simplify right side
    70,373.37x = 2,157,464,318.88
  5. Step 5: Solve for x
    x = 2,157,464,318.88/70,373.37
  6. Step 6: Final answer
    x = 30,657.40

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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.