Home / 90,811.70-136,217.55-28,482.10

Finding the Fourth Proportional to 90,811.70, 136,217.55 and 28,482.10

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Solution

The fourth proportional to 90,811.70, 136,217.55 and 28,482.10 is: 42,723.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,811.70 : 136,217.55 = 28,482.10 : x
  2. Step 2: Convert to fraction form
    90,811.70/136,217.55 = 28,482.10/x
  3. Step 3: Cross multiply
    90,811.70x = 136,217.55 × 28,482.10
  4. Step 4: Simplify right side
    90,811.70x = 3,879,761,880.86
  5. Step 5: Solve for x
    x = 3,879,761,880.86/90,811.70
  6. Step 6: Final answer
    x = 42,723.15

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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.