Home / 87,258.64-120,428.05-53,259.84

Finding the Fourth Proportional to 87,258.64, 120,428.05 and 53,259.84

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Solution

The fourth proportional to 87,258.64, 120,428.05 and 53,259.84 is: 73,505.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,258.64 : 120,428.05 = 53,259.84 : x
  2. Step 2: Convert to fraction form
    87,258.64/120,428.05 = 53,259.84/x
  3. Step 3: Cross multiply
    87,258.64x = 120,428.05 × 53,259.84
  4. Step 4: Simplify right side
    87,258.64x = 6,413,979,035.27
  5. Step 5: Solve for x
    x = 6,413,979,035.27/87,258.64
  6. Step 6: Final answer
    x = 73,505.37

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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.