Home / 42,126-63,207.45-19,955.22

Finding the Fourth Proportional to 42,126, 63,207.45 and 19,955.22

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Solution

The fourth proportional to 42,126, 63,207.45 and 19,955.22 is: 29,941.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,126 : 63,207.45 = 19,955.22 : x
  2. Step 2: Convert to fraction form
    42,126/63,207.45 = 19,955.22/x
  3. Step 3: Cross multiply
    42,126x = 63,207.45 × 19,955.22
  4. Step 4: Simplify right side
    42,126x = 1,261,318,570.39
  5. Step 5: Solve for x
    x = 1,261,318,570.39/42,126
  6. Step 6: Final answer
    x = 29,941.57

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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.