Home / 91,631.28-126,451.10-51,345.37

Finding the Fourth Proportional to 91,631.28, 126,451.10 and 51,345.37

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Solution

The fourth proportional to 91,631.28, 126,451.10 and 51,345.37 is: 70,856.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,631.28 : 126,451.10 = 51,345.37 : x
  2. Step 2: Convert to fraction form
    91,631.28/126,451.10 = 51,345.37/x
  3. Step 3: Cross multiply
    91,631.28x = 126,451.10 × 51,345.37
  4. Step 4: Simplify right side
    91,631.28x = 6,492,678,516.41
  5. Step 5: Solve for x
    x = 6,492,678,516.41/91,631.28
  6. Step 6: Final answer
    x = 70,856.57

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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.