Home / 90,570.48-135,664.20-57,273.36

Finding the Fourth Proportional to 90,570.48, 135,664.20 and 57,273.36

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Solution

The fourth proportional to 90,570.48, 135,664.20 and 57,273.36 is: 85,788.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,570.48 : 135,664.20 = 57,273.36 : x
  2. Step 2: Convert to fraction form
    90,570.48/135,664.20 = 57,273.36/x
  3. Step 3: Cross multiply
    90,570.48x = 135,664.20 × 57,273.36
  4. Step 4: Simplify right side
    90,570.48x = 7,769,944,565.71
  5. Step 5: Solve for x
    x = 7,769,944,565.71/90,570.48
  6. Step 6: Final answer
    x = 85,788.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.