Home / 77,982.32-107,615.85-42,172.58

Finding the Fourth Proportional to 77,982.32, 107,615.85 and 42,172.58

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Solution

The fourth proportional to 77,982.32, 107,615.85 and 42,172.58 is: 58,198.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,982.32 : 107,615.85 = 42,172.58 : x
  2. Step 2: Convert to fraction form
    77,982.32/107,615.85 = 42,172.58/x
  3. Step 3: Cross multiply
    77,982.32x = 107,615.85 × 42,172.58
  4. Step 4: Simplify right side
    77,982.32x = 4,538,437,505.31
  5. Step 5: Solve for x
    x = 4,538,437,505.31/77,982.32
  6. Step 6: Final answer
    x = 58,198.29

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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.