Home / 72,505.46-108,790.40-28,135.62

Finding the Fourth Proportional to 72,505.46, 108,790.40 and 28,135.62

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Solution

The fourth proportional to 72,505.46, 108,790.40 and 28,135.62 is: 42,215.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,505.46 : 108,790.40 = 28,135.62 : x
  2. Step 2: Convert to fraction form
    72,505.46/108,790.40 = 28,135.62/x
  3. Step 3: Cross multiply
    72,505.46x = 108,790.40 × 28,135.62
  4. Step 4: Simplify right side
    72,505.46x = 3,060,885,354.05
  5. Step 5: Solve for x
    x = 3,060,885,354.05/72,505.46
  6. Step 6: Final answer
    x = 42,215.93

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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.