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Finding the Fourth Proportional to 91,285.87, 125,977.07 and 51,004.07

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Solution

The fourth proportional to 91,285.87, 125,977.07 and 51,004.07 is: 70,387.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,285.87 : 125,977.07 = 51,004.07 : x
  2. Step 2: Convert to fraction form
    91,285.87/125,977.07 = 51,004.07/x
  3. Step 3: Cross multiply
    91,285.87x = 125,977.07 × 51,004.07
  4. Step 4: Simplify right side
    91,285.87x = 6,425,342,411.77
  5. Step 5: Solve for x
    x = 6,425,342,411.77/91,285.87
  6. Step 6: Final answer
    x = 70,387.04

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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.