Home / 91,420.74-126,172.31-51,136.74

Finding the Fourth Proportional to 91,420.74, 126,172.31 and 51,136.74

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Solution

The fourth proportional to 91,420.74, 126,172.31 and 51,136.74 is: 70,575.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,420.74 : 126,172.31 = 51,136.74 : x
  2. Step 2: Convert to fraction form
    91,420.74/126,172.31 = 51,136.74/x
  3. Step 3: Cross multiply
    91,420.74x = 126,172.31 × 51,136.74
  4. Step 4: Simplify right side
    91,420.74x = 6,452,040,355.99
  5. Step 5: Solve for x
    x = 6,452,040,355.99/91,420.74
  6. Step 6: Final answer
    x = 70,575.24

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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.