Home / 90,390.50-124,740.14-49,558.47

Finding the Fourth Proportional to 90,390.50, 124,740.14 and 49,558.47

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Solution

The fourth proportional to 90,390.50, 124,740.14 and 49,558.47 is: 68,391.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,390.50 : 124,740.14 = 49,558.47 : x
  2. Step 2: Convert to fraction form
    90,390.50/124,740.14 = 49,558.47/x
  3. Step 3: Cross multiply
    90,390.50x = 124,740.14 × 49,558.47
  4. Step 4: Simplify right side
    90,390.50x = 6,181,930,485.99
  5. Step 5: Solve for x
    x = 6,181,930,485.99/90,390.50
  6. Step 6: Final answer
    x = 68,391.37

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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.