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Finding the Fourth Proportional to 92,930.50, 128,239.29 and 50,487.94

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Solution

The fourth proportional to 92,930.50, 128,239.29 and 50,487.94 is: 69,670.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,930.50 : 128,239.29 = 50,487.94 : x
  2. Step 2: Convert to fraction form
    92,930.50/128,239.29 = 50,487.94/x
  3. Step 3: Cross multiply
    92,930.50x = 128,239.29 × 50,487.94
  4. Step 4: Simplify right side
    92,930.50x = 6,474,537,579.16
  5. Step 5: Solve for x
    x = 6,474,537,579.16/92,930.50
  6. Step 6: Final answer
    x = 69,670.75

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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.