Home / 91,421.46-126,172.08-51,145.43

Finding the Fourth Proportional to 91,421.46, 126,172.08 and 51,145.43

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Solution

The fourth proportional to 91,421.46, 126,172.08 and 51,145.43 is: 70,586.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,421.46 : 126,172.08 = 51,145.43 : x
  2. Step 2: Convert to fraction form
    91,421.46/126,172.08 = 51,145.43/x
  3. Step 3: Cross multiply
    91,421.46x = 126,172.08 × 51,145.43
  4. Step 4: Simplify right side
    91,421.46x = 6,453,124,654.73
  5. Step 5: Solve for x
    x = 6,453,124,654.73/91,421.46
  6. Step 6: Final answer
    x = 70,586.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.