Home / 91,890.20-126,828.24-56,072.54

Finding the Fourth Proportional to 91,890.20, 126,828.24 and 56,072.54

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Solution

The fourth proportional to 91,890.20, 126,828.24 and 56,072.54 is: 77,392.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,890.20 : 126,828.24 = 56,072.54 : x
  2. Step 2: Convert to fraction form
    91,890.20/126,828.24 = 56,072.54/x
  3. Step 3: Cross multiply
    91,890.20x = 126,828.24 × 56,072.54
  4. Step 4: Simplify right side
    91,890.20x = 7,111,581,560.53
  5. Step 5: Solve for x
    x = 7,111,581,560.53/91,890.20
  6. Step 6: Final answer
    x = 77,392.17

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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.