Home / 90,049.12-135,068.82-45,674.74

Finding the Fourth Proportional to 90,049.12, 135,068.82 and 45,674.74

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Solution

The fourth proportional to 90,049.12, 135,068.82 and 45,674.74 is: 68,509.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,049.12 : 135,068.82 = 45,674.74 : x
  2. Step 2: Convert to fraction form
    90,049.12/135,068.82 = 45,674.74/x
  3. Step 3: Cross multiply
    90,049.12x = 135,068.82 × 45,674.74
  4. Step 4: Simplify right side
    90,049.12x = 6,169,233,235.61
  5. Step 5: Solve for x
    x = 6,169,233,235.61/90,049.12
  6. Step 6: Final answer
    x = 68,509.64

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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.