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Finding the Fourth Proportional to 91,236.56, 125,901.64 and 51,490

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Solution

The fourth proportional to 91,236.56, 125,901.64 and 51,490 is: 71,053.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,236.56 : 125,901.64 = 51,490 : x
  2. Step 2: Convert to fraction form
    91,236.56/125,901.64 = 51,490/x
  3. Step 3: Cross multiply
    91,236.56x = 125,901.64 × 51,490
  4. Step 4: Simplify right side
    91,236.56x = 6,482,675,443.60
  5. Step 5: Solve for x
    x = 6,482,675,443.60/91,236.56
  6. Step 6: Final answer
    x = 71,053.48

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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.