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Finding the Fourth Proportional to 68,503.08, 94,472.81 and 57,056

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Solution

The fourth proportional to 68,503.08, 94,472.81 and 57,056 is: 78,686.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,503.08 : 94,472.81 = 57,056 : x
  2. Step 2: Convert to fraction form
    68,503.08/94,472.81 = 57,056/x
  3. Step 3: Cross multiply
    68,503.08x = 94,472.81 × 57,056
  4. Step 4: Simplify right side
    68,503.08x = 5,390,240,647.36
  5. Step 5: Solve for x
    x = 5,390,240,647.36/68,503.08
  6. Step 6: Final answer
    x = 78,686.11

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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.