Home / 78,811.06-108,758.86-43,000.96

Finding the Fourth Proportional to 78,811.06, 108,758.86 and 43,000.96

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Solution

The fourth proportional to 78,811.06, 108,758.86 and 43,000.96 is: 59,341.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,811.06 : 108,758.86 = 43,000.96 : x
  2. Step 2: Convert to fraction form
    78,811.06/108,758.86 = 43,000.96/x
  3. Step 3: Cross multiply
    78,811.06x = 108,758.86 × 43,000.96
  4. Step 4: Simplify right side
    78,811.06x = 4,676,735,388.51
  5. Step 5: Solve for x
    x = 4,676,735,388.51/78,811.06
  6. Step 6: Final answer
    x = 59,341.11

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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.