Home / 51,631.74-71,275.41-39,690.90

Finding the Fourth Proportional to 51,631.74, 71,275.41 and 39,690.90

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Solution

The fourth proportional to 51,631.74, 71,275.41 and 39,690.90 is: 54,791.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,631.74 : 71,275.41 = 39,690.90 : x
  2. Step 2: Convert to fraction form
    51,631.74/71,275.41 = 39,690.90/x
  3. Step 3: Cross multiply
    51,631.74x = 71,275.41 × 39,690.90
  4. Step 4: Simplify right side
    51,631.74x = 2,828,985,170.77
  5. Step 5: Solve for x
    x = 2,828,985,170.77/51,631.74
  6. Step 6: Final answer
    x = 54,791.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.