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Finding the Fourth Proportional to 88,689.69, 133,029.68 and 53,619.93

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Solution

The fourth proportional to 88,689.69, 133,029.68 and 53,619.93 is: 80,426.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,689.69 : 133,029.68 = 53,619.93 : x
  2. Step 2: Convert to fraction form
    88,689.69/133,029.68 = 53,619.93/x
  3. Step 3: Cross multiply
    88,689.69x = 133,029.68 × 53,619.93
  4. Step 4: Simplify right side
    88,689.69x = 7,133,041,861.42
  5. Step 5: Solve for x
    x = 7,133,041,861.42/88,689.69
  6. Step 6: Final answer
    x = 80,426.96

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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.