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Finding the Fourth Proportional to 60,115.50, 90,188.10 and 18,562.50

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Solution

The fourth proportional to 60,115.50, 90,188.10 and 18,562.50 is: 27,848.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,115.50 : 90,188.10 = 18,562.50 : x
  2. Step 2: Convert to fraction form
    60,115.50/90,188.10 = 18,562.50/x
  3. Step 3: Cross multiply
    60,115.50x = 90,188.10 × 18,562.50
  4. Step 4: Simplify right side
    60,115.50x = 1,674,116,606.25
  5. Step 5: Solve for x
    x = 1,674,116,606.25/60,115.50
  6. Step 6: Final answer
    x = 27,848.34

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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.