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Finding the Fourth Proportional to 77,215.59, 115,744.08 and 43,864.44

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Solution

The fourth proportional to 77,215.59, 115,744.08 and 43,864.44 is: 65,751.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,215.59 : 115,744.08 = 43,864.44 : x
  2. Step 2: Convert to fraction form
    77,215.59/115,744.08 = 43,864.44/x
  3. Step 3: Cross multiply
    77,215.59x = 115,744.08 × 43,864.44
  4. Step 4: Simplify right side
    77,215.59x = 5,077,049,252.52
  5. Step 5: Solve for x
    x = 5,077,049,252.52/77,215.59
  6. Step 6: Final answer
    x = 65,751.61

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1.5x scale

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.