Home / 90,045.12-135,062.82-45,670.73

Finding the Fourth Proportional to 90,045.12, 135,062.82 and 45,670.73

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Solution

The fourth proportional to 90,045.12, 135,062.82 and 45,670.73 is: 68,503.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,045.12 : 135,062.82 = 45,670.73 : x
  2. Step 2: Convert to fraction form
    90,045.12/135,062.82 = 45,670.73/x
  3. Step 3: Cross multiply
    90,045.12x = 135,062.82 × 45,670.73
  4. Step 4: Simplify right side
    90,045.12x = 6,168,416,909.94
  5. Step 5: Solve for x
    x = 6,168,416,909.94/90,045.12
  6. Step 6: Final answer
    x = 68,503.62

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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.