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Finding the Fourth Proportional to 89,302.91, 133,766.74 and 72,492.47

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Solution

The fourth proportional to 89,302.91, 133,766.74 and 72,492.47 is: 108,586.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,302.91 : 133,766.74 = 72,492.47 : x
  2. Step 2: Convert to fraction form
    89,302.91/133,766.74 = 72,492.47/x
  3. Step 3: Cross multiply
    89,302.91x = 133,766.74 × 72,492.47
  4. Step 4: Simplify right side
    89,302.91x = 9,697,081,309.85
  5. Step 5: Solve for x
    x = 9,697,081,309.85/89,302.91
  6. Step 6: Final answer
    x = 108,586.40

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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.