Home / 90,890.55-136,368.63-31,734.94

Finding the Fourth Proportional to 90,890.55, 136,368.63 and 31,734.94

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Solution

The fourth proportional to 90,890.55, 136,368.63 and 31,734.94 is: 47,613.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,890.55 : 136,368.63 = 31,734.94 : x
  2. Step 2: Convert to fraction form
    90,890.55/136,368.63 = 31,734.94/x
  3. Step 3: Cross multiply
    90,890.55x = 136,368.63 × 31,734.94
  4. Step 4: Simplify right side
    90,890.55x = 4,327,649,609.09
  5. Step 5: Solve for x
    x = 4,327,649,609.09/90,890.55
  6. Step 6: Final answer
    x = 47,613.86

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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.