Home / 89,521.80-123,530.40-51,789

Finding the Fourth Proportional to 89,521.80, 123,530.40 and 51,789

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Solution

The fourth proportional to 89,521.80, 123,530.40 and 51,789 is: 71,463.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,521.80 : 123,530.40 = 51,789 : x
  2. Step 2: Convert to fraction form
    89,521.80/123,530.40 = 51,789/x
  3. Step 3: Cross multiply
    89,521.80x = 123,530.40 × 51,789
  4. Step 4: Simplify right side
    89,521.80x = 6,397,515,885.60
  5. Step 5: Solve for x
    x = 6,397,515,885.60/89,521.80
  6. Step 6: Final answer
    x = 71,463.22

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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.