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Finding the Fourth Proportional to 68,289, 94,264.74 and 45,945.96

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Solution

The fourth proportional to 68,289, 94,264.74 and 45,945.96 is: 63,422.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,289 : 94,264.74 = 45,945.96 : x
  2. Step 2: Convert to fraction form
    68,289/94,264.74 = 45,945.96/x
  3. Step 3: Cross multiply
    68,289x = 94,264.74 × 45,945.96
  4. Step 4: Simplify right side
    68,289x = 4,331,083,973.45
  5. Step 5: Solve for x
    x = 4,331,083,973.45/68,289
  6. Step 6: Final answer
    x = 63,422.86

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1.5x scale

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.