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Finding the Fourth Proportional to 68,565.17, 102,788.28 and 30,585.89

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Solution

The fourth proportional to 68,565.17, 102,788.28 and 30,585.89 is: 45,852.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,565.17 : 102,788.28 = 30,585.89 : x
  2. Step 2: Convert to fraction form
    68,565.17/102,788.28 = 30,585.89/x
  3. Step 3: Cross multiply
    68,565.17x = 102,788.28 × 30,585.89
  4. Step 4: Simplify right side
    68,565.17x = 3,143,871,025.37
  5. Step 5: Solve for x
    x = 3,143,871,025.37/68,565.17
  6. Step 6: Final answer
    x = 45,852.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.