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Finding the Fourth Proportional to 56,908.80, 85,168.80 and 49,910.40

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Solution

The fourth proportional to 56,908.80, 85,168.80 and 49,910.40 is: 74,695.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,908.80 : 85,168.80 = 49,910.40 : x
  2. Step 2: Convert to fraction form
    56,908.80/85,168.80 = 49,910.40/x
  3. Step 3: Cross multiply
    56,908.80x = 85,168.80 × 49,910.40
  4. Step 4: Simplify right side
    56,908.80x = 4,250,808,875.52
  5. Step 5: Solve for x
    x = 4,250,808,875.52/56,908.80
  6. Step 6: Final answer
    x = 74,695.11

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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.