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Finding the Fourth Proportional to 89,151.30, 133,722.09 and 29,980.80

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Solution

The fourth proportional to 89,151.30, 133,722.09 and 29,980.80 is: 44,969.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,151.30 : 133,722.09 = 29,980.80 : x
  2. Step 2: Convert to fraction form
    89,151.30/133,722.09 = 29,980.80/x
  3. Step 3: Cross multiply
    89,151.30x = 133,722.09 × 29,980.80
  4. Step 4: Simplify right side
    89,151.30x = 4,009,095,235.87
  5. Step 5: Solve for x
    x = 4,009,095,235.87/89,151.30
  6. Step 6: Final answer
    x = 44,969.57

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1.5x scale

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.