Home / 89,726.44-123,803.94-61,421.80

Finding the Fourth Proportional to 89,726.44, 123,803.94 and 61,421.80

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Solution

The fourth proportional to 89,726.44, 123,803.94 and 61,421.80 is: 84,749.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,726.44 : 123,803.94 = 61,421.80 : x
  2. Step 2: Convert to fraction form
    89,726.44/123,803.94 = 61,421.80/x
  3. Step 3: Cross multiply
    89,726.44x = 123,803.94 × 61,421.80
  4. Step 4: Simplify right side
    89,726.44x = 7,604,260,841.89
  5. Step 5: Solve for x
    x = 7,604,260,841.89/89,726.44
  6. Step 6: Final answer
    x = 84,749.39

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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.