Home / 91,967.45-126,920.90-51,136.16

Finding the Fourth Proportional to 91,967.45, 126,920.90 and 51,136.16

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Solution

The fourth proportional to 91,967.45, 126,920.90 and 51,136.16 is: 70,571.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,967.45 : 126,920.90 = 51,136.16 : x
  2. Step 2: Convert to fraction form
    91,967.45/126,920.90 = 51,136.16/x
  3. Step 3: Cross multiply
    91,967.45x = 126,920.90 × 51,136.16
  4. Step 4: Simplify right side
    91,967.45x = 6,490,246,942.98
  5. Step 5: Solve for x
    x = 6,490,246,942.98/91,967.45
  6. Step 6: Final answer
    x = 70,571.13

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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.