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Finding the Fourth Proportional to 91,359.86, 126,077.54 and 51,075.86

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Solution

The fourth proportional to 91,359.86, 126,077.54 and 51,075.86 is: 70,485.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,359.86 : 126,077.54 = 51,075.86 : x
  2. Step 2: Convert to fraction form
    91,359.86/126,077.54 = 51,075.86/x
  3. Step 3: Cross multiply
    91,359.86x = 126,077.54 × 51,075.86
  4. Step 4: Simplify right side
    91,359.86x = 6,439,517,896.42
  5. Step 5: Solve for x
    x = 6,439,517,896.42/91,359.86
  6. Step 6: Final answer
    x = 70,485.20

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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.