Home / 91,929.60-126,879.36-54,201.60

Finding the Fourth Proportional to 91,929.60, 126,879.36 and 54,201.60

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Solution

The fourth proportional to 91,929.60, 126,879.36 and 54,201.60 is: 74,807.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,929.60 : 126,879.36 = 54,201.60 : x
  2. Step 2: Convert to fraction form
    91,929.60/126,879.36 = 54,201.60/x
  3. Step 3: Cross multiply
    91,929.60x = 126,879.36 × 54,201.60
  4. Step 4: Simplify right side
    91,929.60x = 6,877,064,318.98
  5. Step 5: Solve for x
    x = 6,877,064,318.98/91,929.60
  6. Step 6: Final answer
    x = 74,807.94

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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.