Home / 76,137.58-105,063.28-42,146.11

Finding the Fourth Proportional to 76,137.58, 105,063.28 and 42,146.11

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Solution

The fourth proportional to 76,137.58, 105,063.28 and 42,146.11 is: 58,157.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,137.58 : 105,063.28 = 42,146.11 : x
  2. Step 2: Convert to fraction form
    76,137.58/105,063.28 = 42,146.11/x
  3. Step 3: Cross multiply
    76,137.58x = 105,063.28 × 42,146.11
  4. Step 4: Simplify right side
    76,137.58x = 4,428,008,555.84
  5. Step 5: Solve for x
    x = 4,428,008,555.84/76,137.58
  6. Step 6: Final answer
    x = 58,157.99

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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.