Home / 90,860.88-136,313.92-31,697.36

Finding the Fourth Proportional to 90,860.88, 136,313.92 and 31,697.36

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Solution

The fourth proportional to 90,860.88, 136,313.92 and 31,697.36 is: 47,553.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,860.88 : 136,313.92 = 31,697.36 : x
  2. Step 2: Convert to fraction form
    90,860.88/136,313.92 = 31,697.36/x
  3. Step 3: Cross multiply
    90,860.88x = 136,313.92 × 31,697.36
  4. Step 4: Simplify right side
    90,860.88x = 4,320,791,395.25
  5. Step 5: Solve for x
    x = 4,320,791,395.25/90,860.88
  6. Step 6: Final answer
    x = 47,553.92

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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.