Home / 87,847.44-121,285.32-57,686.28

Finding the Fourth Proportional to 87,847.44, 121,285.32 and 57,686.28

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Solution

The fourth proportional to 87,847.44, 121,285.32 and 57,686.28 is: 79,643.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,847.44 : 121,285.32 = 57,686.28 : x
  2. Step 2: Convert to fraction form
    87,847.44/121,285.32 = 57,686.28/x
  3. Step 3: Cross multiply
    87,847.44x = 121,285.32 × 57,686.28
  4. Step 4: Simplify right side
    87,847.44x = 6,996,498,929.41
  5. Step 5: Solve for x
    x = 6,996,498,929.41/87,847.44
  6. Step 6: Final answer
    x = 79,643.74

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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.