Home / 90,763.20-136,145.34-31,557.42

Finding the Fourth Proportional to 90,763.20, 136,145.34 and 31,557.42

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Solution

The fourth proportional to 90,763.20, 136,145.34 and 31,557.42 is: 47,336.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,763.20 : 136,145.34 = 31,557.42 : x
  2. Step 2: Convert to fraction form
    90,763.20/136,145.34 = 31,557.42/x
  3. Step 3: Cross multiply
    90,763.20x = 136,145.34 × 31,557.42
  4. Step 4: Simplify right side
    90,763.20x = 4,296,395,675.42
  5. Step 5: Solve for x
    x = 4,296,395,675.42/90,763.20
  6. Step 6: Final answer
    x = 47,336.32

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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.