Home / 91,329.86-126,032.64-51,043.76

Finding the Fourth Proportional to 91,329.86, 126,032.64 and 51,043.76

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Solution

The fourth proportional to 91,329.86, 126,032.64 and 51,043.76 is: 70,438.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,329.86 : 126,032.64 = 51,043.76 : x
  2. Step 2: Convert to fraction form
    91,329.86/126,032.64 = 51,043.76/x
  3. Step 3: Cross multiply
    91,329.86x = 126,032.64 × 51,043.76
  4. Step 4: Simplify right side
    91,329.86x = 6,433,179,828.33
  5. Step 5: Solve for x
    x = 6,433,179,828.33/91,329.86
  6. Step 6: Final answer
    x = 70,438.95

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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.