Home / 87,883.09-121,298.36-57,201.76

Finding the Fourth Proportional to 87,883.09, 121,298.36 and 57,201.76

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Solution

The fourth proportional to 87,883.09, 121,298.36 and 57,201.76 is: 78,951.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,883.09 : 121,298.36 = 57,201.76 : x
  2. Step 2: Convert to fraction form
    87,883.09/121,298.36 = 57,201.76/x
  3. Step 3: Cross multiply
    87,883.09x = 121,298.36 × 57,201.76
  4. Step 4: Simplify right side
    87,883.09x = 6,938,479,864.49
  5. Step 5: Solve for x
    x = 6,938,479,864.49/87,883.09
  6. Step 6: Final answer
    x = 78,951.25

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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.