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Finding the Fourth Proportional to 77,074.88, 115,627.92 and 43,810.88

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Solution

The fourth proportional to 77,074.88, 115,627.92 and 43,810.88 is: 65,725.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,074.88 : 115,627.92 = 43,810.88 : x
  2. Step 2: Convert to fraction form
    77,074.88/115,627.92 = 43,810.88/x
  3. Step 3: Cross multiply
    77,074.88x = 115,627.92 × 43,810.88
  4. Step 4: Simplify right side
    77,074.88x = 5,065,760,927.77
  5. Step 5: Solve for x
    x = 5,065,760,927.77/77,074.88
  6. Step 6: Final answer
    x = 65,725.19

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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.