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Finding the Fourth Proportional to 66,509.30, 91,779.99 and 36,293.87

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Solution

The fourth proportional to 66,509.30, 91,779.99 and 36,293.87 is: 50,083.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,509.30 : 91,779.99 = 36,293.87 : x
  2. Step 2: Convert to fraction form
    66,509.30/91,779.99 = 36,293.87/x
  3. Step 3: Cross multiply
    66,509.30x = 91,779.99 × 36,293.87
  4. Step 4: Simplify right side
    66,509.30x = 3,331,051,119.01
  5. Step 5: Solve for x
    x = 3,331,051,119.01/66,509.30
  6. Step 6: Final answer
    x = 50,083.99

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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.