Home / 90,645.48-125,108.65-57,918.96

Finding the Fourth Proportional to 90,645.48, 125,108.65 and 57,918.96

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Solution

The fourth proportional to 90,645.48, 125,108.65 and 57,918.96 is: 79,939.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,645.48 : 125,108.65 = 57,918.96 : x
  2. Step 2: Convert to fraction form
    90,645.48/125,108.65 = 57,918.96/x
  3. Step 3: Cross multiply
    90,645.48x = 125,108.65 × 57,918.96
  4. Step 4: Simplify right side
    90,645.48x = 7,246,162,895.00
  5. Step 5: Solve for x
    x = 7,246,162,895.00/90,645.48
  6. Step 6: Final answer
    x = 79,939.59

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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.