Home / 77,631.76-107,170.50-52,612.48

Finding the Fourth Proportional to 77,631.76, 107,170.50 and 52,612.48

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Solution

The fourth proportional to 77,631.76, 107,170.50 and 52,612.48 is: 72,631.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,631.76 : 107,170.50 = 52,612.48 : x
  2. Step 2: Convert to fraction form
    77,631.76/107,170.50 = 52,612.48/x
  3. Step 3: Cross multiply
    77,631.76x = 107,170.50 × 52,612.48
  4. Step 4: Simplify right side
    77,631.76x = 5,638,505,787.84
  5. Step 5: Solve for x
    x = 5,638,505,787.84/77,631.76
  6. Step 6: Final answer
    x = 72,631.43

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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.