Home / 87,892.47-121,258.14-64,977.31

Finding the Fourth Proportional to 87,892.47, 121,258.14 and 64,977.31

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Solution

The fourth proportional to 87,892.47, 121,258.14 and 64,977.31 is: 89,643.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,892.47 : 121,258.14 = 64,977.31 : x
  2. Step 2: Convert to fraction form
    87,892.47/121,258.14 = 64,977.31/x
  3. Step 3: Cross multiply
    87,892.47x = 121,258.14 × 64,977.31
  4. Step 4: Simplify right side
    87,892.47x = 7,879,027,752.80
  5. Step 5: Solve for x
    x = 7,879,027,752.80/87,892.47
  6. Step 6: Final answer
    x = 89,643.95

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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.