Home / 90,802.62-136,032.21-51,388.02

Finding the Fourth Proportional to 90,802.62, 136,032.21 and 51,388.02

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Solution

The fourth proportional to 90,802.62, 136,032.21 and 51,388.02 is: 76,984.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,802.62 : 136,032.21 = 51,388.02 : x
  2. Step 2: Convert to fraction form
    90,802.62/136,032.21 = 51,388.02/x
  3. Step 3: Cross multiply
    90,802.62x = 136,032.21 × 51,388.02
  4. Step 4: Simplify right side
    90,802.62x = 6,990,425,928.12
  5. Step 5: Solve for x
    x = 6,990,425,928.12/90,802.62
  6. Step 6: Final answer
    x = 76,984.85

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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.