Home / 76,803.32-105,989.10-42,813.96

Finding the Fourth Proportional to 76,803.32, 105,989.10 and 42,813.96

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Solution

The fourth proportional to 76,803.32, 105,989.10 and 42,813.96 is: 59,083.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,803.32 : 105,989.10 = 42,813.96 : x
  2. Step 2: Convert to fraction form
    76,803.32/105,989.10 = 42,813.96/x
  3. Step 3: Cross multiply
    76,803.32x = 105,989.10 × 42,813.96
  4. Step 4: Simplify right side
    76,803.32x = 4,537,813,645.85
  5. Step 5: Solve for x
    x = 4,537,813,645.85/76,803.32
  6. Step 6: Final answer
    x = 59,083.56

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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.