Home / 90,421.92-124,778.88-50,136.12

Finding the Fourth Proportional to 90,421.92, 124,778.88 and 50,136.12

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Solution

The fourth proportional to 90,421.92, 124,778.88 and 50,136.12 is: 69,185.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,421.92 : 124,778.88 = 50,136.12 : x
  2. Step 2: Convert to fraction form
    90,421.92/124,778.88 = 50,136.12/x
  3. Step 3: Cross multiply
    90,421.92x = 124,778.88 × 50,136.12
  4. Step 4: Simplify right side
    90,421.92x = 6,255,928,901.15
  5. Step 5: Solve for x
    x = 6,255,928,901.15/90,421.92
  6. Step 6: Final answer
    x = 69,185.98

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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.