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Finding the Fourth Proportional to 91,301.70, 125,952.72 and 57,293.28

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Solution

The fourth proportional to 91,301.70, 125,952.72 and 57,293.28 is: 79,037.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,301.70 : 125,952.72 = 57,293.28 : x
  2. Step 2: Convert to fraction form
    91,301.70/125,952.72 = 57,293.28/x
  3. Step 3: Cross multiply
    91,301.70x = 125,952.72 × 57,293.28
  4. Step 4: Simplify right side
    91,301.70x = 7,216,244,453.72
  5. Step 5: Solve for x
    x = 7,216,244,453.72/91,301.70
  6. Step 6: Final answer
    x = 79,037.35

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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.