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Finding the Fourth Proportional to 60,669.90, 91,005.05 and 18,549.81

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Solution

The fourth proportional to 60,669.90, 91,005.05 and 18,549.81 is: 27,824.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,669.90 : 91,005.05 = 18,549.81 : x
  2. Step 2: Convert to fraction form
    60,669.90/91,005.05 = 18,549.81/x
  3. Step 3: Cross multiply
    60,669.90x = 91,005.05 × 18,549.81
  4. Step 4: Simplify right side
    60,669.90x = 1,688,126,293.79
  5. Step 5: Solve for x
    x = 1,688,126,293.79/60,669.90
  6. Step 6: Final answer
    x = 27,824.77

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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.