Home / 56,985.83-78,640.23-31,491.48

Finding the Fourth Proportional to 56,985.83, 78,640.23 and 31,491.48

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Solution

The fourth proportional to 56,985.83, 78,640.23 and 31,491.48 is: 43,458.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,985.83 : 78,640.23 = 31,491.48 : x
  2. Step 2: Convert to fraction form
    56,985.83/78,640.23 = 31,491.48/x
  3. Step 3: Cross multiply
    56,985.83x = 78,640.23 × 31,491.48
  4. Step 4: Simplify right side
    56,985.83x = 2,476,497,230.24
  5. Step 5: Solve for x
    x = 2,476,497,230.24/56,985.83
  6. Step 6: Final answer
    x = 43,458.13

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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.