Home / 87,883.23-121,281.07-53,910.45

Finding the Fourth Proportional to 87,883.23, 121,281.07 and 53,910.45

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Solution

The fourth proportional to 87,883.23, 121,281.07 and 53,910.45 is: 74,397.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,883.23 : 121,281.07 = 53,910.45 : x
  2. Step 2: Convert to fraction form
    87,883.23/121,281.07 = 53,910.45/x
  3. Step 3: Cross multiply
    87,883.23x = 121,281.07 × 53,910.45
  4. Step 4: Simplify right side
    87,883.23x = 6,538,317,060.18
  5. Step 5: Solve for x
    x = 6,538,317,060.18/87,883.23
  6. Step 6: Final answer
    x = 74,397.78

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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.