Home / 91,439.46-126,181.38-51,145.45

Finding the Fourth Proportional to 91,439.46, 126,181.38 and 51,145.45

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Solution

The fourth proportional to 91,439.46, 126,181.38 and 51,145.45 is: 70,577.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,439.46 : 126,181.38 = 51,145.45 : x
  2. Step 2: Convert to fraction form
    91,439.46/126,181.38 = 51,145.45/x
  3. Step 3: Cross multiply
    91,439.46x = 126,181.38 × 51,145.45
  4. Step 4: Simplify right side
    91,439.46x = 6,453,603,461.72
  5. Step 5: Solve for x
    x = 6,453,603,461.72/91,439.46
  6. Step 6: Final answer
    x = 70,577.88

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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.