Home / 90,812.80-136,219.20-40,910.32

Finding the Fourth Proportional to 90,812.80, 136,219.20 and 40,910.32

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Solution

The fourth proportional to 90,812.80, 136,219.20 and 40,910.32 is: 61,365.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,812.80 : 136,219.20 = 40,910.32 : x
  2. Step 2: Convert to fraction form
    90,812.80/136,219.20 = 40,910.32/x
  3. Step 3: Cross multiply
    90,812.80x = 136,219.20 × 40,910.32
  4. Step 4: Simplify right side
    90,812.80x = 5,572,771,062.14
  5. Step 5: Solve for x
    x = 5,572,771,062.14/90,812.80
  6. Step 6: Final answer
    x = 61,365.48

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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.