Home / 87,935.31-121,350.87-47,649.42

Finding the Fourth Proportional to 87,935.31, 121,350.87 and 47,649.42

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Solution

The fourth proportional to 87,935.31, 121,350.87 and 47,649.42 is: 65,756.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,935.31 : 121,350.87 = 47,649.42 : x
  2. Step 2: Convert to fraction form
    87,935.31/121,350.87 = 47,649.42/x
  3. Step 3: Cross multiply
    87,935.31x = 121,350.87 × 47,649.42
  4. Step 4: Simplify right side
    87,935.31x = 5,782,298,572.00
  5. Step 5: Solve for x
    x = 5,782,298,572.00/87,935.31
  6. Step 6: Final answer
    x = 65,756.28

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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.