Home / 77,068.08-115,507.44-43,815.96

Finding the Fourth Proportional to 77,068.08, 115,507.44 and 43,815.96

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Solution

The fourth proportional to 77,068.08, 115,507.44 and 43,815.96 is: 65,670.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,068.08 : 115,507.44 = 43,815.96 : x
  2. Step 2: Convert to fraction form
    77,068.08/115,507.44 = 43,815.96/x
  3. Step 3: Cross multiply
    77,068.08x = 115,507.44 × 43,815.96
  4. Step 4: Simplify right side
    77,068.08x = 5,061,069,370.74
  5. Step 5: Solve for x
    x = 5,061,069,370.74/77,068.08
  6. Step 6: Final answer
    x = 65,670.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.