Home / 90,641.48-125,093.68-54,840.28

Finding the Fourth Proportional to 90,641.48, 125,093.68 and 54,840.28

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Solution

The fourth proportional to 90,641.48, 125,093.68 and 54,840.28 is: 75,684.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,641.48 : 125,093.68 = 54,840.28 : x
  2. Step 2: Convert to fraction form
    90,641.48/125,093.68 = 54,840.28/x
  3. Step 3: Cross multiply
    90,641.48x = 125,093.68 × 54,840.28
  4. Step 4: Simplify right side
    90,641.48x = 6,860,172,437.43
  5. Step 5: Solve for x
    x = 6,860,172,437.43/90,641.48
  6. Step 6: Final answer
    x = 75,684.69

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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.