Home / 76,872.12-106,083.70-42,879.76

Finding the Fourth Proportional to 76,872.12, 106,083.70 and 42,879.76

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Solution

The fourth proportional to 76,872.12, 106,083.70 and 42,879.76 is: 59,174.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,872.12 : 106,083.70 = 42,879.76 : x
  2. Step 2: Convert to fraction form
    76,872.12/106,083.70 = 42,879.76/x
  3. Step 3: Cross multiply
    76,872.12x = 106,083.70 × 42,879.76
  4. Step 4: Simplify right side
    76,872.12x = 4,548,843,595.91
  5. Step 5: Solve for x
    x = 4,548,843,595.91/76,872.12
  6. Step 6: Final answer
    x = 59,174.17

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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.