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Finding the Fourth Proportional to 91,804.86, 126,673.88 and 61,633.98

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Solution

The fourth proportional to 91,804.86, 126,673.88 and 61,633.98 is: 85,043.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,804.86 : 126,673.88 = 61,633.98 : x
  2. Step 2: Convert to fraction form
    91,804.86/126,673.88 = 61,633.98/x
  3. Step 3: Cross multiply
    91,804.86x = 126,673.88 × 61,633.98
  4. Step 4: Simplify right side
    91,804.86x = 7,807,415,386.44
  5. Step 5: Solve for x
    x = 7,807,415,386.44/91,804.86
  6. Step 6: Final answer
    x = 85,043.60

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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.