Home / 56,770.14-78,345.20-31,619.64

Finding the Fourth Proportional to 56,770.14, 78,345.20 and 31,619.64

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Solution

The fourth proportional to 56,770.14, 78,345.20 and 31,619.64 is: 43,636.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,770.14 : 78,345.20 = 31,619.64 : x
  2. Step 2: Convert to fraction form
    56,770.14/78,345.20 = 31,619.64/x
  3. Step 3: Cross multiply
    56,770.14x = 78,345.20 × 31,619.64
  4. Step 4: Simplify right side
    56,770.14x = 2,477,247,019.73
  5. Step 5: Solve for x
    x = 2,477,247,019.73/56,770.14
  6. Step 6: Final answer
    x = 43,636.44

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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.