Home / 51,239.28-70,707.72-28,580.64

Finding the Fourth Proportional to 51,239.28, 70,707.72 and 28,580.64

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Solution

The fourth proportional to 51,239.28, 70,707.72 and 28,580.64 is: 39,439.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,239.28 : 70,707.72 = 28,580.64 : x
  2. Step 2: Convert to fraction form
    51,239.28/70,707.72 = 28,580.64/x
  3. Step 3: Cross multiply
    51,239.28x = 70,707.72 × 28,580.64
  4. Step 4: Simplify right side
    51,239.28x = 2,020,871,890.54
  5. Step 5: Solve for x
    x = 2,020,871,890.54/51,239.28
  6. Step 6: Final answer
    x = 39,439.90

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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.