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Finding the Fourth Proportional to 77,966.88, 107,509.60 and 49,636.32

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Solution

The fourth proportional to 77,966.88, 107,509.60 and 49,636.32 is: 68,444.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,966.88 : 107,509.60 = 49,636.32 : x
  2. Step 2: Convert to fraction form
    77,966.88/107,509.60 = 49,636.32/x
  3. Step 3: Cross multiply
    77,966.88x = 107,509.60 × 49,636.32
  4. Step 4: Simplify right side
    77,966.88x = 5,336,380,908.67
  5. Step 5: Solve for x
    x = 5,336,380,908.67/77,966.88
  6. Step 6: Final answer
    x = 68,444.20

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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.