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Finding the Fourth Proportional to 91,674.69, 126,510.91 and 51,388.48

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Solution

The fourth proportional to 91,674.69, 126,510.91 and 51,388.48 is: 70,916.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,674.69 : 126,510.91 = 51,388.48 : x
  2. Step 2: Convert to fraction form
    91,674.69/126,510.91 = 51,388.48/x
  3. Step 3: Cross multiply
    91,674.69x = 126,510.91 × 51,388.48
  4. Step 4: Simplify right side
    91,674.69x = 6,501,202,975.42
  5. Step 5: Solve for x
    x = 6,501,202,975.42/91,674.69
  6. Step 6: Final answer
    x = 70,916.01

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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.