Home / 90,748.13-125,225.25-50,459.40

Finding the Fourth Proportional to 90,748.13, 125,225.25 and 50,459.40

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Solution

The fourth proportional to 90,748.13, 125,225.25 and 50,459.40 is: 69,629.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,748.13 : 125,225.25 = 50,459.40 : x
  2. Step 2: Convert to fraction form
    90,748.13/125,225.25 = 50,459.40/x
  3. Step 3: Cross multiply
    90,748.13x = 125,225.25 × 50,459.40
  4. Step 4: Simplify right side
    90,748.13x = 6,318,790,979.85
  5. Step 5: Solve for x
    x = 6,318,790,979.85/90,748.13
  6. Step 6: Final answer
    x = 69,629.99

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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.