Home / 90,521.65-135,665.34-50,539.60

Finding the Fourth Proportional to 90,521.65, 135,665.34 and 50,539.60

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Solution

The fourth proportional to 90,521.65, 135,665.34 and 50,539.60 is: 75,744.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,521.65 : 135,665.34 = 50,539.60 : x
  2. Step 2: Convert to fraction form
    90,521.65/135,665.34 = 50,539.60/x
  3. Step 3: Cross multiply
    90,521.65x = 135,665.34 × 50,539.60
  4. Step 4: Simplify right side
    90,521.65x = 6,856,472,017.46
  5. Step 5: Solve for x
    x = 6,856,472,017.46/90,521.65
  6. Step 6: Final answer
    x = 75,744.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.