Home / 91,428.76-126,183.36-51,144.76

Finding the Fourth Proportional to 91,428.76, 126,183.36 and 51,144.76

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Solution

The fourth proportional to 91,428.76, 126,183.36 and 51,144.76 is: 70,586.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,428.76 : 126,183.36 = 51,144.76 : x
  2. Step 2: Convert to fraction form
    91,428.76/126,183.36 = 51,144.76/x
  3. Step 3: Cross multiply
    91,428.76x = 126,183.36 × 51,144.76
  4. Step 4: Simplify right side
    91,428.76x = 6,453,617,663.19
  5. Step 5: Solve for x
    x = 6,453,617,663.19/91,428.76
  6. Step 6: Final answer
    x = 70,586.30

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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.