Home / 90,699.59-125,114.36-54,391.37

Finding the Fourth Proportional to 90,699.59, 125,114.36 and 54,391.37

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Solution

The fourth proportional to 90,699.59, 125,114.36 and 54,391.37 is: 75,029.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,699.59 : 125,114.36 = 54,391.37 : x
  2. Step 2: Convert to fraction form
    90,699.59/125,114.36 = 54,391.37/x
  3. Step 3: Cross multiply
    90,699.59x = 125,114.36 × 54,391.37
  4. Step 4: Simplify right side
    90,699.59x = 6,805,140,549.54
  5. Step 5: Solve for x
    x = 6,805,140,549.54/90,699.59
  6. Step 6: Final answer
    x = 75,029.45

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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.