Home / 90,874.56-125,445.60-61,083.84

Finding the Fourth Proportional to 90,874.56, 125,445.60 and 61,083.84

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Solution

The fourth proportional to 90,874.56, 125,445.60 and 61,083.84 is: 84,321.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,874.56 : 125,445.60 = 61,083.84 : x
  2. Step 2: Convert to fraction form
    90,874.56/125,445.60 = 61,083.84/x
  3. Step 3: Cross multiply
    90,874.56x = 125,445.60 × 61,083.84
  4. Step 4: Simplify right side
    90,874.56x = 7,662,698,959.10
  5. Step 5: Solve for x
    x = 7,662,698,959.10/90,874.56
  6. Step 6: Final answer
    x = 84,321.72

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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.