Home / 91,355.91-126,071.64-51,071.37

Finding the Fourth Proportional to 91,355.91, 126,071.64 and 51,071.37

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Solution

The fourth proportional to 91,355.91, 126,071.64 and 51,071.37 is: 70,478.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,355.91 : 126,071.64 = 51,071.37 : x
  2. Step 2: Convert to fraction form
    91,355.91/126,071.64 = 51,071.37/x
  3. Step 3: Cross multiply
    91,355.91x = 126,071.64 × 51,071.37
  4. Step 4: Simplify right side
    91,355.91x = 6,438,651,372.95
  5. Step 5: Solve for x
    x = 6,438,651,372.95/91,355.91
  6. Step 6: Final answer
    x = 70,478.76

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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.