Home / 89,784.78-134,633.08-51,311.80

Finding the Fourth Proportional to 89,784.78, 134,633.08 and 51,311.80

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Solution

The fourth proportional to 89,784.78, 134,633.08 and 51,311.80 is: 76,942.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,784.78 : 134,633.08 = 51,311.80 : x
  2. Step 2: Convert to fraction form
    89,784.78/134,633.08 = 51,311.80/x
  3. Step 3: Cross multiply
    89,784.78x = 134,633.08 × 51,311.80
  4. Step 4: Simplify right side
    89,784.78x = 6,908,265,674.34
  5. Step 5: Solve for x
    x = 6,908,265,674.34/89,784.78
  6. Step 6: Final answer
    x = 76,942.50

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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.