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Finding the Fourth Proportional to 91,325.36, 125,993.40 and 57,314

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Solution

The fourth proportional to 91,325.36, 125,993.40 and 57,314 is: 79,070.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,325.36 : 125,993.40 = 57,314 : x
  2. Step 2: Convert to fraction form
    91,325.36/125,993.40 = 57,314/x
  3. Step 3: Cross multiply
    91,325.36x = 125,993.40 × 57,314
  4. Step 4: Simplify right side
    91,325.36x = 7,221,185,727.60
  5. Step 5: Solve for x
    x = 7,221,185,727.60/91,325.36
  6. Step 6: Final answer
    x = 79,070.98

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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.