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Finding the Fourth Proportional to 77,721.63, 107,255.84 and 44,187.63

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Solution

The fourth proportional to 77,721.63, 107,255.84 and 44,187.63 is: 60,978.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,721.63 : 107,255.84 = 44,187.63 : x
  2. Step 2: Convert to fraction form
    77,721.63/107,255.84 = 44,187.63/x
  3. Step 3: Cross multiply
    77,721.63x = 107,255.84 × 44,187.63
  4. Step 4: Simplify right side
    77,721.63x = 4,739,381,373.26
  5. Step 5: Solve for x
    x = 4,739,381,373.26/77,721.63
  6. Step 6: Final answer
    x = 60,978.92

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1.5x scale

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.