Home / 70,235.40-105,337.29-20,304.37

Finding the Fourth Proportional to 70,235.40, 105,337.29 and 20,304.37

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Solution

The fourth proportional to 70,235.40, 105,337.29 and 20,304.37 is: 30,451.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,235.40 : 105,337.29 = 20,304.37 : x
  2. Step 2: Convert to fraction form
    70,235.40/105,337.29 = 20,304.37/x
  3. Step 3: Cross multiply
    70,235.40x = 105,337.29 × 20,304.37
  4. Step 4: Simplify right side
    70,235.40x = 2,138,807,310.96
  5. Step 5: Solve for x
    x = 2,138,807,310.96/70,235.40
  6. Step 6: Final answer
    x = 30,451.98

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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.