Home / 72,638.15-108,963.50-20,047.64

Finding the Fourth Proportional to 72,638.15, 108,963.50 and 20,047.64

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Solution

The fourth proportional to 72,638.15, 108,963.50 and 20,047.64 is: 30,073.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,638.15 : 108,963.50 = 20,047.64 : x
  2. Step 2: Convert to fraction form
    72,638.15/108,963.50 = 20,047.64/x
  3. Step 3: Cross multiply
    72,638.15x = 108,963.50 × 20,047.64
  4. Step 4: Simplify right side
    72,638.15x = 2,184,460,376.08
  5. Step 5: Solve for x
    x = 2,184,460,376.08/72,638.15
  6. Step 6: Final answer
    x = 30,073.19

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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.