Home / 87,971.60-121,338.60-53,981.84

Finding the Fourth Proportional to 87,971.60, 121,338.60 and 53,981.84

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Solution

The fourth proportional to 87,971.60, 121,338.60 and 53,981.84 is: 74,456.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,971.60 : 121,338.60 = 53,981.84 : x
  2. Step 2: Convert to fraction form
    87,971.60/121,338.60 = 53,981.84/x
  3. Step 3: Cross multiply
    87,971.60x = 121,338.60 × 53,981.84
  4. Step 4: Simplify right side
    87,971.60x = 6,550,080,891.02
  5. Step 5: Solve for x
    x = 6,550,080,891.02/87,971.60
  6. Step 6: Final answer
    x = 74,456.77

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1.5x scale

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.