Home / 56,811.15-78,399.94-31,318.52

Finding the Fourth Proportional to 56,811.15, 78,399.94 and 31,318.52

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Solution

The fourth proportional to 56,811.15, 78,399.94 and 31,318.52 is: 43,219.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,811.15 : 78,399.94 = 31,318.52 : x
  2. Step 2: Convert to fraction form
    56,811.15/78,399.94 = 31,318.52/x
  3. Step 3: Cross multiply
    56,811.15x = 78,399.94 × 31,318.52
  4. Step 4: Simplify right side
    56,811.15x = 2,455,369,618.59
  5. Step 5: Solve for x
    x = 2,455,369,618.59/56,811.15
  6. Step 6: Final answer
    x = 43,219.85

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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.