Home / 61,277.62-91,931.21-21,290.78

Finding the Fourth Proportional to 61,277.62, 91,931.21 and 21,290.78

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Solution

The fourth proportional to 61,277.62, 91,931.21 and 21,290.78 is: 31,941.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,277.62 : 91,931.21 = 21,290.78 : x
  2. Step 2: Convert to fraction form
    61,277.62/91,931.21 = 21,290.78/x
  3. Step 3: Cross multiply
    61,277.62x = 91,931.21 × 21,290.78
  4. Step 4: Simplify right side
    61,277.62x = 1,957,287,167.24
  5. Step 5: Solve for x
    x = 1,957,287,167.24/61,277.62
  6. Step 6: Final answer
    x = 31,941.31

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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.