Home / 66,430.55-99,628.82-19,672.49

Finding the Fourth Proportional to 66,430.55, 99,628.82 and 19,672.49

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Solution

The fourth proportional to 66,430.55, 99,628.82 and 19,672.49 is: 29,503.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,430.55 : 99,628.82 = 19,672.49 : x
  2. Step 2: Convert to fraction form
    66,430.55/99,628.82 = 19,672.49/x
  3. Step 3: Cross multiply
    66,430.55x = 99,628.82 × 19,672.49
  4. Step 4: Simplify right side
    66,430.55x = 1,959,947,189.64
  5. Step 5: Solve for x
    x = 1,959,947,189.64/66,430.55
  6. Step 6: Final answer
    x = 29,503.70

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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.