Home / 42,606.20-63,861.30-20,430.20

Finding the Fourth Proportional to 42,606.20, 63,861.30 and 20,430.20

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Solution

The fourth proportional to 42,606.20, 63,861.30 and 20,430.20 is: 30,622.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,606.20 : 63,861.30 = 20,430.20 : x
  2. Step 2: Convert to fraction form
    42,606.20/63,861.30 = 20,430.20/x
  3. Step 3: Cross multiply
    42,606.20x = 63,861.30 × 20,430.20
  4. Step 4: Simplify right side
    42,606.20x = 1,304,699,131.26
  5. Step 5: Solve for x
    x = 1,304,699,131.26/42,606.20
  6. Step 6: Final answer
    x = 30,622.28

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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.