Home / 90,910.42-136,387.09-28,580.92

Finding the Fourth Proportional to 90,910.42, 136,387.09 and 28,580.92

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Solution

The fourth proportional to 90,910.42, 136,387.09 and 28,580.92 is: 42,878.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,910.42 : 136,387.09 = 28,580.92 : x
  2. Step 2: Convert to fraction form
    90,910.42/136,387.09 = 28,580.92/x
  3. Step 3: Cross multiply
    90,910.42x = 136,387.09 × 28,580.92
  4. Step 4: Simplify right side
    90,910.42x = 3,898,068,203.08
  5. Step 5: Solve for x
    x = 3,898,068,203.08/90,910.42
  6. Step 6: Final answer
    x = 42,878.12

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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.