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Finding the Fourth Proportional to 60,655.61, 90,999.79 and 18,534.54

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Solution

The fourth proportional to 60,655.61, 90,999.79 and 18,534.54 is: 27,806.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,655.61 : 90,999.79 = 18,534.54 : x
  2. Step 2: Convert to fraction form
    60,655.61/90,999.79 = 18,534.54/x
  3. Step 3: Cross multiply
    60,655.61x = 90,999.79 × 18,534.54
  4. Step 4: Simplify right side
    60,655.61x = 1,686,639,247.75
  5. Step 5: Solve for x
    x = 1,686,639,247.75/60,655.61
  6. Step 6: Final answer
    x = 27,806.81

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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.