Home / 56,985.86-78,640.19-31,494.02

Finding the Fourth Proportional to 56,985.86, 78,640.19 and 31,494.02

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Solution

The fourth proportional to 56,985.86, 78,640.19 and 31,494.02 is: 43,461.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,985.86 : 78,640.19 = 31,494.02 : x
  2. Step 2: Convert to fraction form
    56,985.86/78,640.19 = 31,494.02/x
  3. Step 3: Cross multiply
    56,985.86x = 78,640.19 × 31,494.02
  4. Step 4: Simplify right side
    56,985.86x = 2,476,695,716.66
  5. Step 5: Solve for x
    x = 2,476,695,716.66/56,985.86
  6. Step 6: Final answer
    x = 43,461.58

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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.