Home / 91,420.85-126,149.42-51,124.52

Finding the Fourth Proportional to 91,420.85, 126,149.42 and 51,124.52

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Solution

The fourth proportional to 91,420.85, 126,149.42 and 51,124.52 is: 70,545.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,420.85 : 126,149.42 = 51,124.52 : x
  2. Step 2: Convert to fraction form
    91,420.85/126,149.42 = 51,124.52/x
  3. Step 3: Cross multiply
    91,420.85x = 126,149.42 × 51,124.52
  4. Step 4: Simplify right side
    91,420.85x = 6,449,328,545.78
  5. Step 5: Solve for x
    x = 6,449,328,545.78/91,420.85
  6. Step 6: Final answer
    x = 70,545.49

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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.