Home / 56,649.87-78,173.78-31,497.75

Finding the Fourth Proportional to 56,649.87, 78,173.78 and 31,497.75

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Solution

The fourth proportional to 56,649.87, 78,173.78 and 31,497.75 is: 43,465.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,649.87 : 78,173.78 = 31,497.75 : x
  2. Step 2: Convert to fraction form
    56,649.87/78,173.78 = 31,497.75/x
  3. Step 3: Cross multiply
    56,649.87x = 78,173.78 × 31,497.75
  4. Step 4: Simplify right side
    56,649.87x = 2,462,298,021.51
  5. Step 5: Solve for x
    x = 2,462,298,021.51/56,649.87
  6. Step 6: Final answer
    x = 43,465.20

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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.