Home / 51,102.99-76,663.77-21,117.30

Finding the Fourth Proportional to 51,102.99, 76,663.77 and 21,117.30

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Solution

The fourth proportional to 51,102.99, 76,663.77 and 21,117.30 is: 31,679.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,102.99 : 76,663.77 = 21,117.30 : x
  2. Step 2: Convert to fraction form
    51,102.99/76,663.77 = 21,117.30/x
  3. Step 3: Cross multiply
    51,102.99x = 76,663.77 × 21,117.30
  4. Step 4: Simplify right side
    51,102.99x = 1,618,931,830.22
  5. Step 5: Solve for x
    x = 1,618,931,830.22/51,102.99
  6. Step 6: Final answer
    x = 31,679.79

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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.