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Finding the Fourth Proportional to 89,053.88, 133,630 and 49,633.20

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Solution

The fourth proportional to 89,053.88, 133,630 and 49,633.20 is: 74,477.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,053.88 : 133,630 = 49,633.20 : x
  2. Step 2: Convert to fraction form
    89,053.88/133,630 = 49,633.20/x
  3. Step 3: Cross multiply
    89,053.88x = 133,630 × 49,633.20
  4. Step 4: Simplify right side
    89,053.88x = 6,632,484,516
  5. Step 5: Solve for x
    x = 6,632,484,516/89,053.88
  6. Step 6: Final answer
    x = 74,477.21

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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.