Home / 42,172.20-63,269.82-30,303.72

Finding the Fourth Proportional to 42,172.20, 63,269.82 and 30,303.72

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Solution

The fourth proportional to 42,172.20, 63,269.82 and 30,303.72 is: 45,463.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,172.20 : 63,269.82 = 30,303.72 : x
  2. Step 2: Convert to fraction form
    42,172.20/63,269.82 = 30,303.72/x
  3. Step 3: Cross multiply
    42,172.20x = 63,269.82 × 30,303.72
  4. Step 4: Simplify right side
    42,172.20x = 1,917,310,909.73
  5. Step 5: Solve for x
    x = 1,917,310,909.73/42,172.20
  6. Step 6: Final answer
    x = 45,463.86

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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.