Home / 90,421.87-124,776.09-52,183.02

Finding the Fourth Proportional to 90,421.87, 124,776.09 and 52,183.02

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Solution

The fourth proportional to 90,421.87, 124,776.09 and 52,183.02 is: 72,009.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,421.87 : 124,776.09 = 52,183.02 : x
  2. Step 2: Convert to fraction form
    90,421.87/124,776.09 = 52,183.02/x
  3. Step 3: Cross multiply
    90,421.87x = 124,776.09 × 52,183.02
  4. Step 4: Simplify right side
    90,421.87x = 6,511,193,199.99
  5. Step 5: Solve for x
    x = 6,511,193,199.99/90,421.87
  6. Step 6: Final answer
    x = 72,009.05

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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.