Home / 56,810.94-78,399.09-31,317.74

Finding the Fourth Proportional to 56,810.94, 78,399.09 and 31,317.74

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Solution

The fourth proportional to 56,810.94, 78,399.09 and 31,317.74 is: 43,218.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,810.94 : 78,399.09 = 31,317.74 : x
  2. Step 2: Convert to fraction form
    56,810.94/78,399.09 = 31,317.74/x
  3. Step 3: Cross multiply
    56,810.94x = 78,399.09 × 31,317.74
  4. Step 4: Simplify right side
    56,810.94x = 2,455,282,218.86
  5. Step 5: Solve for x
    x = 2,455,282,218.86/56,810.94
  6. Step 6: Final answer
    x = 43,218.47

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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.