Home / 56,631.14-78,151.94-31,138.54

Finding the Fourth Proportional to 56,631.14, 78,151.94 and 31,138.54

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Solution

The fourth proportional to 56,631.14, 78,151.94 and 31,138.54 is: 42,971.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,631.14 : 78,151.94 = 31,138.54 : x
  2. Step 2: Convert to fraction form
    56,631.14/78,151.94 = 31,138.54/x
  3. Step 3: Cross multiply
    56,631.14x = 78,151.94 × 31,138.54
  4. Step 4: Simplify right side
    56,631.14x = 2,433,537,309.77
  5. Step 5: Solve for x
    x = 2,433,537,309.77/56,631.14
  6. Step 6: Final answer
    x = 42,971.72

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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.