Home / 90,801.62-136,030.70-51,387.02

Finding the Fourth Proportional to 90,801.62, 136,030.70 and 51,387.02

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Solution

The fourth proportional to 90,801.62, 136,030.70 and 51,387.02 is: 76,983.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,801.62 : 136,030.70 = 51,387.02 : x
  2. Step 2: Convert to fraction form
    90,801.62/136,030.70 = 51,387.02/x
  3. Step 3: Cross multiply
    90,801.62x = 136,030.70 × 51,387.02
  4. Step 4: Simplify right side
    90,801.62x = 6,990,212,301.51
  5. Step 5: Solve for x
    x = 6,990,212,301.51/90,801.62
  6. Step 6: Final answer
    x = 76,983.34

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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.