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Finding the Fourth Proportional to 92,758.72, 128,006.04 and 50,316.88

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Solution

The fourth proportional to 92,758.72, 128,006.04 and 50,316.88 is: 69,436.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,758.72 : 128,006.04 = 50,316.88 : x
  2. Step 2: Convert to fraction form
    92,758.72/128,006.04 = 50,316.88/x
  3. Step 3: Cross multiply
    92,758.72x = 128,006.04 × 50,316.88
  4. Step 4: Simplify right side
    92,758.72x = 6,440,864,553.96
  5. Step 5: Solve for x
    x = 6,440,864,553.96/92,758.72
  6. Step 6: Final answer
    x = 69,436.76

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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.