Home / 90,876.82-125,515.02-60,609.55

Finding the Fourth Proportional to 90,876.82, 125,515.02 and 60,609.55

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Solution

The fourth proportional to 90,876.82, 125,515.02 and 60,609.55 is: 83,711.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,876.82 : 125,515.02 = 60,609.55 : x
  2. Step 2: Convert to fraction form
    90,876.82/125,515.02 = 60,609.55/x
  3. Step 3: Cross multiply
    90,876.82x = 125,515.02 × 60,609.55
  4. Step 4: Simplify right side
    90,876.82x = 7,607,408,880.44
  5. Step 5: Solve for x
    x = 7,607,408,880.44/90,876.82
  6. Step 6: Final answer
    x = 83,711.21

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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.