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Finding the Fourth Proportional to 39,986.64, 59,903.64 and 22,403.28

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Solution

The fourth proportional to 39,986.64, 59,903.64 and 22,403.28 is: 33,562.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,986.64 : 59,903.64 = 22,403.28 : x
  2. Step 2: Convert to fraction form
    39,986.64/59,903.64 = 22,403.28/x
  3. Step 3: Cross multiply
    39,986.64x = 59,903.64 × 22,403.28
  4. Step 4: Simplify right side
    39,986.64x = 1,342,038,019.94
  5. Step 5: Solve for x
    x = 1,342,038,019.94/39,986.64
  6. Step 6: Final answer
    x = 33,562.16

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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.