Home / 56,781.12-78,358.44-31,631.04

Finding the Fourth Proportional to 56,781.12, 78,358.44 and 31,631.04

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Solution

The fourth proportional to 56,781.12, 78,358.44 and 31,631.04 is: 43,651.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,781.12 : 78,358.44 = 31,631.04 : x
  2. Step 2: Convert to fraction form
    56,781.12/78,358.44 = 31,631.04/x
  3. Step 3: Cross multiply
    56,781.12x = 78,358.44 × 31,631.04
  4. Step 4: Simplify right side
    56,781.12x = 2,478,558,949.98
  5. Step 5: Solve for x
    x = 2,478,558,949.98/56,781.12
  6. Step 6: Final answer
    x = 43,651.11

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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.