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Finding the Fourth Proportional to 92,890.50, 128,189.52 and 50,449.02

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Solution

The fourth proportional to 92,890.50, 128,189.52 and 50,449.02 is: 69,619.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,890.50 : 128,189.52 = 50,449.02 : x
  2. Step 2: Convert to fraction form
    92,890.50/128,189.52 = 50,449.02/x
  3. Step 3: Cross multiply
    92,890.50x = 128,189.52 × 50,449.02
  4. Step 4: Simplify right side
    92,890.50x = 6,467,035,658.27
  5. Step 5: Solve for x
    x = 6,467,035,658.27/92,890.50
  6. Step 6: Final answer
    x = 69,619.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.