Home / 51,989.14-78,018.30-28,302.66

Finding the Fourth Proportional to 51,989.14, 78,018.30 and 28,302.66

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Solution

The fourth proportional to 51,989.14, 78,018.30 and 28,302.66 is: 42,472.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,989.14 : 78,018.30 = 28,302.66 : x
  2. Step 2: Convert to fraction form
    51,989.14/78,018.30 = 28,302.66/x
  3. Step 3: Cross multiply
    51,989.14x = 78,018.30 × 28,302.66
  4. Step 4: Simplify right side
    51,989.14x = 2,208,125,418.68
  5. Step 5: Solve for x
    x = 2,208,125,418.68/51,989.14
  6. Step 6: Final answer
    x = 42,472.82

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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.