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Finding the Fourth Proportional to 76,910.92, 106,108.68 and 45,068.20

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Solution

The fourth proportional to 76,910.92, 106,108.68 and 45,068.20 is: 62,177.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,910.92 : 106,108.68 = 45,068.20 : x
  2. Step 2: Convert to fraction form
    76,910.92/106,108.68 = 45,068.20/x
  3. Step 3: Cross multiply
    76,910.92x = 106,108.68 × 45,068.20
  4. Step 4: Simplify right side
    76,910.92x = 4,782,127,115.71
  5. Step 5: Solve for x
    x = 4,782,127,115.71/76,910.92
  6. Step 6: Final answer
    x = 62,177.48

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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.