Home / 90,876.12-125,420.82-52,129.05

Finding the Fourth Proportional to 90,876.12, 125,420.82 and 52,129.05

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Solution

The fourth proportional to 90,876.12, 125,420.82 and 52,129.05 is: 71,944.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,876.12 : 125,420.82 = 52,129.05 : x
  2. Step 2: Convert to fraction form
    90,876.12/125,420.82 = 52,129.05/x
  3. Step 3: Cross multiply
    90,876.12x = 125,420.82 × 52,129.05
  4. Step 4: Simplify right side
    90,876.12x = 6,538,068,196.82
  5. Step 5: Solve for x
    x = 6,538,068,196.82/90,876.12
  6. Step 6: Final answer
    x = 71,944.84

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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.