Home / 76,703.12-105,847.44-42,712.82

Finding the Fourth Proportional to 76,703.12, 105,847.44 and 42,712.82

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Solution

The fourth proportional to 76,703.12, 105,847.44 and 42,712.82 is: 58,942.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,703.12 : 105,847.44 = 42,712.82 : x
  2. Step 2: Convert to fraction form
    76,703.12/105,847.44 = 42,712.82/x
  3. Step 3: Cross multiply
    76,703.12x = 105,847.44 × 42,712.82
  4. Step 4: Simplify right side
    76,703.12x = 4,521,042,652.18
  5. Step 5: Solve for x
    x = 4,521,042,652.18/76,703.12
  6. Step 6: Final answer
    x = 58,942.10

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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.