Home / 90,759.76-136,164.12-31,598.80

Finding the Fourth Proportional to 90,759.76, 136,164.12 and 31,598.80

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Solution

The fourth proportional to 90,759.76, 136,164.12 and 31,598.80 is: 47,406.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,759.76 : 136,164.12 = 31,598.80 : x
  2. Step 2: Convert to fraction form
    90,759.76/136,164.12 = 31,598.80/x
  3. Step 3: Cross multiply
    90,759.76x = 136,164.12 × 31,598.80
  4. Step 4: Simplify right side
    90,759.76x = 4,302,622,795.06
  5. Step 5: Solve for x
    x = 4,302,622,795.06/90,759.76
  6. Step 6: Final answer
    x = 47,406.72

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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.