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Finding the Fourth Proportional to 68,868.40, 95,030.56 and 38,649.64

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Solution

The fourth proportional to 68,868.40, 95,030.56 and 38,649.64 is: 53,332.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,868.40 : 95,030.56 = 38,649.64 : x
  2. Step 2: Convert to fraction form
    68,868.40/95,030.56 = 38,649.64/x
  3. Step 3: Cross multiply
    68,868.40x = 95,030.56 × 38,649.64
  4. Step 4: Simplify right side
    68,868.40x = 3,672,896,933.00
  5. Step 5: Solve for x
    x = 3,672,896,933.00/68,868.40
  6. Step 6: Final answer
    x = 53,332.11

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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.