Home / 56,644.12-78,169.79-31,151.60

Finding the Fourth Proportional to 56,644.12, 78,169.79 and 31,151.60

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Solution

The fourth proportional to 56,644.12, 78,169.79 and 31,151.60 is: 42,989.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,644.12 : 78,169.79 = 31,151.60 : x
  2. Step 2: Convert to fraction form
    56,644.12/78,169.79 = 31,151.60/x
  3. Step 3: Cross multiply
    56,644.12x = 78,169.79 × 31,151.60
  4. Step 4: Simplify right side
    56,644.12x = 2,435,113,483.56
  5. Step 5: Solve for x
    x = 2,435,113,483.56/56,644.12
  6. Step 6: Final answer
    x = 42,989.70

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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.