Home / 90,728.31-125,212.05-50,445.39

Finding the Fourth Proportional to 90,728.31, 125,212.05 and 50,445.39

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Solution

The fourth proportional to 90,728.31, 125,212.05 and 50,445.39 is: 69,618.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,728.31 : 125,212.05 = 50,445.39 : x
  2. Step 2: Convert to fraction form
    90,728.31/125,212.05 = 50,445.39/x
  3. Step 3: Cross multiply
    90,728.31x = 125,212.05 × 50,445.39
  4. Step 4: Simplify right side
    90,728.31x = 6,316,370,694.95
  5. Step 5: Solve for x
    x = 6,316,370,694.95/90,728.31
  6. Step 6: Final answer
    x = 69,618.52

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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.